3词汇

lap ( v.) :(of waves，etc.)move or strike gently with a light，splashing sound such as a dog makes in lapping(波浪)拍打;泼溅

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divert ( v.) :turn(a person or thing)aside(from a course，direction，etc.);deflect转移;使(人或物)转向;岔开，使偏斜

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Antarctic ( adj. ) :of or near the South Pole or the region around it南极的;近南极的;南极区的;南极地带的;南极周围的

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Trans-Antarctic (adj.) : crossing or spanning the Antarctic横贯南极的;横贯南极地带的

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parka ( n.) :a hip-length pullover fur garment with a hood，worn 1n arctic regions风雪大衣，派克大衣

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glacier ( n.) :a slowly moving river or mass of ice and snow that forms in areas where the rate of snowfall constantly exceeds the rate at which the snow melts冰河;冰川

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accessible ( adj.) : that can be approached or entered;easy to approach or enter能够接近的;能够进去的;易接近的;易进去的

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trap ( v.) :catch in or as in a trap;entrap诱捕;计捉

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inexorable ( adj.) :that cannot be altered，checked，etc.不可变的;不可抗拒的;无情的

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graph ( n.) :a diagram consisting of nodes and links and representing logical relationships or sequences of events(曲线)图，标绘图;图表;图形

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slab ( n.) :a piece that is flat，broad，and fairly thick平板;厚片

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frigid ( adj.) :extremely cold;without heat or warmth极冷的，寒冷的，严寒的

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snowmobile ( n.) :any of various motor vehicles for traveling over snow，usually with steerable runners at the front and tractor treads at the rear(机动)雪车;(履带式)雪上汽车

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rendezvous ( n.) :[Fr.]a place designated for meeting or assembling[法语]指定集合地;会合点

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hover ( v.) :stay suspended or flutter in the air near oneplace盘旋

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eerie，eery ( adj. ) :mysterious，uncanny，or weird，esp. in such a way as to frighten or make uneasy神秘的，离奇的，怪异的;阴森的，恐怖的，可怕的/eerily adv.

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hummock ( n.) :ridge or rise in an ice field冰群;(冰原上的)冰丘

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collide ( v.) :come into violent contact;strike violently against each other;crash碰撞;猛撞;互撞

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scenario ( n.) :a sequence 0f events esp. when imagined;an account or synopsis of a projected course of action or events(设想中的)未来事态;方案

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controversial ( adj. ) :of，subject to，or stirring up controversy;disbatable争论的;引起争论的;

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tundra ( n.) :any of the vast，nearly level，treeless plains of the arctic regions冻原;苔原;冻土带

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equator ( n.) :an imaginary circle around the earth，equally distant at all points from both the North Pole and the South Pole，dividing the earth's surface into the Northern Hemisphere and the Southern Hemisphere赤道

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billow ( v.) :surge，swell，or rise like or in a billow(巨浪)奔腾;(波涛)汹

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pasture ( n.) :

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( n.) :.ground suitable for grazing牧场

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slash (v.) :cut or wound with a sweeping stroke or strokes，as of a knife(用刀等)猛砍，乱砍

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blot (v.) :make blots on;spot;stain;blur(esp. used in blot out：darken or hide entirely;obscure)涂污;玷污;把……弄模糊;遮暗(尤用于bolt out：把……弄模糊;遮暗，

遮蔽;掩蔽)

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noctilucent (adj.) :designating or of a luminous cloud of unknown composition。visible at night in the polar regions at an altitude of c.50 miles夜光云的;夜间发光的

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shimmer ( v.) :shine with an unsteady light;glimmer闪烁;发出微光

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translucent ( adj.) :1etting light pass but diffusing it so that objects on the other side cannot be clearly distinguished;partially transparent，as frosted glass半透明的

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buildup ( n.) :a gradual increase in amount，power，influence，etc.;expansion(在数目、力量、影响等方面)逐渐增加，扩大，扩充;集结

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methane ( n.) :a colorless，odorless，inflammable gaseous hydrocarbon，CH4，present in natural gas and formed by the decomposition of vegetable matter，as in marshes and mines. or produced artificially by heating carbon monoxide and hydrogen over a nickle catalyst甲烷;沼气

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landfill ( n.) :the disposal of garbage or rubbish by burying it under a shallow layer of ground埋入地下的垃圾

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paddy ( n.) :rice in the husk，growing or gathered稻，谷

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termite ( n.) :a kind of insect found chiefly in tropical areas，very destructive to wood，textiles，etc.，which makes large hills of hard earth白蚁

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biomass ( n.) :the total mass or amount of living organisms in a particular area or volume生物量

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extinction ( n.) :the fact or state of being or becoming extinct;dying out，as of a race，species of animal，etc.(动物的)灭绝，绝种

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rip (v.) :cut or tear apart roughly or vigorously撕，扯

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spectral ( adj.) : of or like a specter;phantom;ghostly鬼怪(似)的;幽灵(般)的

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skirmish ( n.) :a brief fight or encounter between small groups，usually an incident of a battle小规模战斗;前哨战

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aquifer ( n.) :an underground layer of porous rock，sand，etc.containing water，into which wells can be sunk含水层(能对水井提供重要经济价值的水量的地下岩层)

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chlorine ( n.) :a greenish-yellow，poisonous，gaseous chemical element with a disagreeable odor.used as a bleaching agent，in water purification，in various industrial processes，etc.(symbol C1)氯(符号C1)

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chlorofluorocarbon ( n.) :any of a series of gaseous or low-boiling，inert，nonflammable derivatives of methane or ethane，used as refrigerants and solvents，and as propellants in aerosol products[化]氟利昂

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disrupt ( v.) :disturb or interrupt the orderly course of扰乱;破坏

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ultraviolet ( adj. ) :1ying just beyond the violet end of the visible spectrum and having wavelengths shorter than approximately 4 000 angstroms紫外(线)的

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molecule ( n.) :the smallest particle of an element or compound that can exist in the free state and still retain the characteristics of the element or compound[化]分子

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equilibrium ( n.) :a state of balance or equality between opposing forces平衡(状态);平均;相称

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exponential ( adj.)[Math.] :of or relating to an exponent：involving a variable or unknown quantity as an exponent[数]指数的;幂的

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axiom ( n.) :a statement universally accepted as true;maxim格言，箴言

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cumulative (adj. ) :increasing in effect，size, quantity，etc.by successive additions;accumulated累积的，堆积的;累加的;(作用、大小、数量等)渐增的

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sustenance ( n.) :one's means of livelihood;maintenance;support生计;支撑;支持，维持

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ozone ( n.) :n unstable，pale-blue gas，O3，with a penetraring odor(an allotropic

form of oxygen，formed usually by a silent electrical discharge in air，and used as an oxidizing，deodorizing.and bleaching agent and in the purification of water)[化]臭氧

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depletion ( n.) :the gradual using up or destruction or capital assets，esp. of natural resources资产(尤指自然资源)的折耗，耗减

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deforestation ( n.) :the act or action of clearing (1and)of forests of trees毁林，滥伐森林

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precedent ( n.) :existing practice resulting from earlier precedents先例;前例

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sober ( v.) :make or become self-controlled，calm，serious in thought，etc.(使)变清醒(或冷静、严肃、庄严等)

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weaponry ( n.) :the design and production o{weapons武器设计和生产

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deploy ( v.) :spread out or place in accordance with a plan展开;部署

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leapfrog ( v.) :jump or skip over跃过;越过

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obsolete ( adj.) :no longer in use or practice;discarded;no longer in fashion;out-of-date已废弃的;已不用的;过时的;老式的

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simplistic (adj.) :making complex problems unrealistically

simple;oversimplifying or oversimplified过分简单化的

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短语(Expressions)

at stake: to be won or lost;being risked 在胜败关头，冒风险

例：This decision put out lives at stake.这一决定，我们的生命就凶吉难保了。