BBC经典《行星地球》英文解说词全集Word文件下载.docx
- 文档编号:19368419
- 上传时间:2023-01-05
- 格式:DOCX
- 页数:40
- 大小:127.79KB
BBC经典《行星地球》英文解说词全集Word文件下载.docx
《BBC经典《行星地球》英文解说词全集Word文件下载.docx》由会员分享,可在线阅读,更多相关《BBC经典《行星地球》英文解说词全集Word文件下载.docx(40页珍藏版)》请在冰豆网上搜索。
第1集PLANETEARTHFromPoletoPole
AhundredyearsagotherewereoneandahalfbillionpeopleonEarth.Now,oversixbillioncrowdourfragileplanetEarth.Butevenso,therearestillplacesbarelytouchedbyhumanity.ThisserieswilltaketothelastwildernessesandshowyoutheplanetEarthanditswildlifeasyouhaveneverseenthembefore.Imagineourworldwithoutsun.MaleEmperorpenguinsarefacingthenearestthatexistsonplanetEarthEarth-winterinAntarctica.It'
scontinuouslydarkandtemperaturesdroptominusseventydegreescentigrade.Thepenguinsstaywhenallothercreatureshavefledbecauseeachguardsatreasure:
asingleeggrestedonthetopofitsfeetandkeptwarmbeneaththedownybulgeofitsstomach.Thereisnofoodandnowaterforthem,andtheywillnotseethesunagainforfourmonths.Surelynogreaterordealisfacedbyanyanimal.AsthesundepartsfromtheAntarcticitlightenstheskiesinthefarnorth.It'
sMarchandlightreturnstothehighArctic,sweepingawayfourmonthsofdarkness.Apolarbearstirs.Shehasbeeninherdenthewholewinter.Heremergencemarksthebeginningofspring.Aftermonthsofconfinementundergroundshetoboggansdowntheslope.
senseofurgency.Atlastitseemsthatthey'
rereadyfortheirjourneyandthey'
reonlyjustintime,forafewmilesfromthecoasttheiceisalreadysplitting.Nowthemothercanstarthuntingforthesealstheymusthave,butshe'
sleadinghercubsintoadangerousnewworld.Nearlyhalfofallcubsdieintheirfirstyearoutontheice.Summerbrings24hoursofsunlightandthethawingshiftinglandscape.FurthersouththewintersnowshavealmostclearedfromtheArctictundra.NorthernCanada'
swildfrontier.Herenaturestagesoneofhergreatestdramas-EveryyearthreemillioncariboumigrateacrosstheArctictundra.Theimmensityoftheherdcanonlybeproperlyappreciatedfromtheair.Someherdstravelover2,000milesayearinsearchoffreshpastures.Thisisthelongestoverlandmigrationmadebyanyanimal.They'
reconstantlyonthemove.Newborncalveshavetobeupandrunningthedaytheyareborn.Butthevastherdsdonottravelalone.Wolves.Packsofthem,eighttotenstrong,shadowthemigration.Andtheyarehungry.It'
sthenewlyborncalvesthattheyareafter.Runningdirectlyattheherdisaploytogeneratepanic.Theherdbreaksupandnowit'
seasiertotargetanindividual.Inthechaosacalfisseparatedfromitsmother.Thecalfisyoung,butitcanoutrunthewolfifonlyitmanagestokeepitsfooting.Atthisstagetheoddsareeven-eitherthecaribouwillmakeamistakeorafteramilethewolfwillgiveup.Midsummeronthetundraandthesundoesnotset.Attheselatitudesthesun'
sraysareglancingandnotenoughoftheirenergyreachesthegroundtoenabletreestogrow.You'
llneedtotravel500milessouthfromherebeforethatispossible.Thesestuntedshrubsmarkthetreeline-thebeginningoftheborealforest-thetaiga.Theneedle-shapedleavesoftheconifersarevirtuallyinediblesothisforestsupportsverylittleanimallife.It'
sasilentplacewherethesnowisunmarkedbyfootprints.IntheArcticwintersnowformsacontinuousblanketacrosstheland.Butasspringcreepsupfromthesouththetaigaisunveiled.ThisvastforestcirclingtheglobecontainsathirdofallthetreesonEarthandproducessomuchoxygenitchangesthecompositionoftheatmosphere.Aswetravelsouthsothesun'
sinfluencegrowsstrongerandat50degreesoflatitudearadicaltransformationbegins.Summersherearelongenoughforbroadleaftreestoreplaceconifers.Broadleavesaremucheasiertoeatanddigestsonowanimalscancollecttheirshareoftheenergythathascomefromthesun.It'
ssummerandtheseforestsarebustlingwithlife.Butthegoodtimeswillnotlast.Broadleavesmustbeshedinwinterfortheirdamagebyfrost.Astheydisappear,sothelandbecomesbarrenwithlittleforanimalstoeat.Theinhabitantsmustmigrate,hibernate,orfacemonthsofnearstarvation.TheAmurleopard-therarestcatintheworld.Here,inthedeciduousforestsofeasternRussiathewintermakeshuntingverydifficult.Prayanimalsarescarce,andthere'
snoconcealingvegetation.Thecubisayearoldandstilldependentonitsmother.Deerarefrequentcasualtiesoftheharshwinterandtheseleopardsarenotabovescavengingfromacorpse.Africanleopardscouldneversurvivehere,buttheRussiancatshavethickfurtoshieldthemfromthecold.ThereareonlyfortyAmurleopardsleftinthewildandthatnumberisfalling.Likesomanycreatures,thecatshavebeenpushedtotheveryedgeofextinctionbyhuntingandthedestructionoftheirhabitat.TheAmurleopardsymbolisesthefragilityofournaturalheritage.Thefutureofanentirespecieshangsonsurvivalofatinynumberofmotherslikethisone.Allanimals,rareorcommon,ultimatelydependfortheirenergyonthesun.InJapanthearrivalofthecherryblossomannouncesthebeginningofspring.Thesun'
senergybringscolourtothelandscape.Theearth,asitmakesitsannualjourneyaroundthesun,spinsonatiltedaxis.Andit'
sthistiltthatcreatestheseasons.Theadvanceoftheseasonsbringsconstantchange.Asthesun'
sinfluencediminishesinthenorth,sothedeciduousforestsofAmericabegintoshutdownlosingtheirleavesinpreparationforthedarkcoldmonthsahead.Oneseasonhandsovertoanother.Someorganismsthriveondecay,butmostmustmakespecialpreparationsforwinterandalifewithlittlesun.Wholepopulationsofanimalsarenowforcedtotravelgreatdistancesinpursuitoffoodandwarmth.300,000BaikaltealgathertoescapefromtheSiberianwinterbymigratingsouthtoKorea-theworld'
sentirepopulationinasingleflock.Buttherearepartsoftheworldthathavenoseasons.Inthetropicsthesun'
sraysstriketheearthheadonandtheirstrengthismoreorlessconstantallyearround.Thatiswhythejunglegrowssovigourouslyandsupportssomuchlife.Thisforestcoversonly3percentoftheplanet'
ssurface,butitcontainsmorethan50percentofallitsplantsandanimals.Thecanopyisparticularlyrich.Therearemonkeys,birdsandmillionsofspeciesofinsects,exactlyhowmanywehavenoidea.Thecharacteroftheforestchangesaswedescend,becomingeverdarkeranddamper,favouringdifferentkindsofanimalsandplants.Lessthan2percentofthesunlightreachesthefloor,butevenherethereisextraordinaryvariety.InthegreatislandofNewGuineathereare42differentspeciesofbirdsofparadise,eachmorebizarrethanthelast.Thisforestissorichthatnourishingfoodcanbegatheredveryquickly.Thatleavesthemalesix-plumedbirdofparadisewithtimetoconcentrateonothermattersliketidyinguphisdisplayarea.Everythingmustbespickandspan.Allisready.Veryimpressive,butnooneiswatching.Thesuperbbirdofparadisecallstoattractafemale.Andhehasmoreluck.Butwhatdoeshehavetodotoreallyimpressher?
Sheretirestoconsiderherverdict.It'
shardnottofeeldeflatedwhenevenyourbestisn'
tgoodenough.Thesuninfluenceslifeintheoceansjustasitdoesonland.Itsrichestpartsarethosewherewavesandcurrentsbringfertilisingnutrientstosurfacewatersthatarebathedinsunlight.TheseasofftheCapeinSouthAfricahavethismagicrecipeandarehugelyproductive.Summeristhetimeofplentyandit'
snowthatthesealsstarttobreed.Thestrikeofagreatwhitesharklastsameresecond.Slowingitdownfortytimesrevealsthetechniqueandimmensestrengthofthismassivepredator.Ifsurprisefails,therewillbeachase.Thesharkisfasteronastraightcoursebutitcan'
tturnassharplyastheseal,itsagilityversuspower.Oncethesealshavefinishedbreedingthegiantsharkswillmoveon.It'
snowbecomingclearthatgreatwhitesmigratethousandsofmilesacrosstheoceanstoharvestseasonalabundancesindifferentseas.Thesun,beatingdownontropicalwaters,powerstheweathersystemsoftheglobe.Moistureevaporatesfromthewarmingoceanandrisestocreategreatstorms.Thewindsgeneratedoutatseasweepinlandacrossthecontinents.AstheytravelacrosstheSaharatheycreatethebiggestofallsandstormsblowingsandhalfwayroundtheworldtofertilizetheAmazonjungle.WindsblowingacrosstheIndianOceancollectmoistureandsweepnorthwardstowardstheHimalayas.Astheairrises,soitcools.Thewateritcarriescondensesintocloudsandthenfallsasthelifegivingrainsofthemonsoon.Soaircurrentspoweredbythesuncarrywetairtothemiddleofcontinents.Withoutwatertherecanbenolife,butitsdistributionoverthelandisfarfromeven.Desertscoveronethirdoftheland'
ssurfaceandthey'
regrowingbiggereveryyear.ThisistheKalahariDesertinSouthernAfrica.It'
sthedryseasonandthousandsofelephantshavestartedtotravelindesperatesearchforwater.AllacrossSouthernAfricaanimalsarejourneyingforthesamereason.Buffalojointhegreattrek.NowhereelseonEartharesomanyanimalsonthemovewiththesameurgentpurpose.They'
reallheadingfortheswampsoftheOkavango,avastinlanddelta.Atthemomentitisdry,butwateriscoming.Thetravellersarehamperedbydangerousduststorms.Femalesandcalvescaneasilygetseparatedfromthemainherd.Forthispairsanctuaryliesinthepatchofwoodlandafewmilesahead.Theycan'
trestuntiltheyreachit.Themainhasalreadygottheresafely.Finally,thestragglersemergefromthedust.Theexhaustedcalfisstillblindedbysand.Itsmotherdoeseverythingpossibletohelpit.Thestormisnowsubsiding,butnotalltheelephantshavebeensolucky.
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 行星地球 BBC 经典 行星 地球 英文 解说词 全集