#【新概念英語第四冊第40課:Waves】Firstlistenandthenanswerthefollowingquestion.聽錄音，然后回答以下問題。Whatfalseimpressiondoesanoceanwereconveytotheobserver?Wavesarethechildrenofthestrugglebetweenoceanandatmosphere,theongoingsignaturesofinfinity.Raysfromthesunexciteandenergizetheatmosphereoftheearth,awakeningittoflow,tomovement,torhythm,tolife.Thewindthenspeaksthemessageofthesuntotheseaandtheseatransmitsitonthroughwaves--anancient,exquisite,powerfulmessage.海浪是大海和空氣相斗的產物，無限的一種不間斷的標志。太陽光刺激了地球的大氣層，并給予它能量；陽光使空氣開始流動，產生節奏，獲得生命。然后，風把太陽的住處帶給了大海，海洋用波浪的形式傳遞這個信息--一個源過流長、高雅而有力的信息。Theseoceanwavesareamongtheearth’smostcomplicatednaturalphenomena.Thebasicfeaturesincludeacrest(thehighestpointofthewave),atrough(thelowestpoint),aheight(theverticaldistancefromthetroughtothecrest),awavelength(thehorizontaldistancebetweentwowavecrests),andaperiod(whichisthetimeittakesawavecresttotravelonewavelength).Althoughanoceanwavegivestheimpressionofawallofwatermovinginyourdirection,inactualitywavesmovethroughthewaterleavingthewateraboutwhereitwas.Ifthewaterwasmovingwiththewave,theoceanandeverythingonitwouldberacingintotheshorewithobviouslycatastrophicresults.這些海浪屬于地球上最復雜的自然現象。它們的基本特征包括浪峰(波浪的最高點)、波谷(最低點)、浪高(從波谷到浪峰的垂直距離)、波長(兩個浪峰間的水平距離)和周期(海峰走過一個波長所需的時間)。雖然，海浪給人的印象是一堵由水組成的墻向你壓過來，而實際上，浪從水中移過，而水則留在原處。如果水和浪一起移動的話，那么大海和海里所有的東西就會向岸邊疾涌過來，帶來明顯的災難性后果。Anoceanwavepassingthroughdeepwatercausesaparticleonthesurfacetomoveinaroughlycircularorbit,drawingtheparticlefirsttowardstheadvancingwave,thenupintothewave,thenforwardwithitandthen--asthewaveleavestheparticlesbehind--backtoitsstartingpointagain.穿過深水的海浪使水面上的一個微粒按照一種近乎圓形的軌道移動，先把微粒拉向前移動的海浪，然后推上波浪，隨著波浪移動，然后--當波浪把微粒留在身后時--又回到出發點。Frombothmaturitytodeath,awaveissubjecttothesamelawsasanyother‘living’thing.Foratimeitassumesamiraculousindividualitythat,intheend,isreabsorbedintothegreatoceanoflife.從成熟到消亡，波浪和其他任何＂活動中＂的東西一樣，都受制于共同的法則。一度它獲得非凡的個性，但最終又被重新融進生命的大洋。Theundulatingwavesoftheopenseaaregeneratedbythreenaturalcauses:wind,earthmovementsortremors,andthegravitationalpullofthemoonandthesun.Oncewaveshavebeengenerated,gravityistheforcethatdrivestheminacontinualattempttorestoretheoceansurfacetoaflatplain.公海上起伏的波浪是由3個自然因素構成的：風、地球的運動或震顫和月亮、太陽的引力。一旦波浪形成，地球引力是持續不斷企圖使海面復原為平面的力量。Newwordsandexpressions生詞和短語signaturen.簽名，標記infinityn.無窮rayn.光線energizev.給與...能量rhythmn.節奏transmitv.傳送exquisiteadj.高雅的phenomenan.現象crestn.浪峰troughn.波谷verticaladj.垂直的horizontaladj.水平的actualityn.現實catastrophicadj.大災難的particlen.微粒maturityn.