BBC经典《行星地球》英文解说词全集.docx
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BBC经典《行星地球》英文解说词全集.docx
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BBC经典《行星地球》英文解说词全集
BBC经典_词(全集)
行星地球英文解说词
第1集PLANETEARTHFromPoletoPole
AhundredyearsagotherewereoneandahalfbillionpeopleonEarth.Now,oversixbillioncrowdourfragileplanetEarth.Butevenso,therearestillplacesbarelytouchedbyhumanity.ThisserieswilltaketothelastwildernessesandshowyoutheplanetEarthanditswildlifeasyouhaveneverseenthembefore.Imagineourworldwithoutsun.MaleEmperorpenguinsarefacingthenearestthatexistsonplanetEarthEarth-winterinAntarctica^It*scontinuouslydarkandtemperaturesdroptominusseventydegreescentigrade.Thepenguinsstaywhenallothercreatureshavefledbecauseeachguardsatreasure:
asingleeggrestedonthetopofitsfeetandkeptwarmbeneaththedownybulgeofitsstomach*Thereisnofoodandnowaterforthem,andtheywillnotseethesunagainforfourmonths.SurelynogreaterordealisfacedbyanyanimalsAsthesundepartsfromtheAntarcticitlightenstheskiesinthefarnorth.ItfsMarchandlightreturnstothehighArctic,sweepingawayfourmonthsofdarkness.Apolarbearstirs.ShehasbeeninherdenthewholewinterHeremergencemarksthebeginningofspring.Aftermonthsofconfinementundergroundshetoboggansdowntheslope.
Perhapstocleanherfur,perhapsforsheerjoy.Hercubsgazeoutoftheirbrightnewworldfortheveryfirsttime.Thefemalecallsthem,butthissteepslopeisnottheeasiestplacetotakeyourfirststeps.Buttheyarehungryandeagertoreachtheirmother,who'sdelayedfeedingthemonthisspecialday.Nowsheluresthemwiththepromiseofmilk,theonlyfoodthecubshaveknownsincetheywereborndeafandblindbeneaththesnowsometwomonthsago.TheirmotherhasnoteatenforfivemonthsandhaslosthalfherbodyweightNowsheconvertsthelastofherfatreservesintomilkforhercubs.Thespringsunbringswarmthbutalsoaproblemforthemother.Itstartstomelttheseaice.Thatiswhereshehuntsforthesealsheneedstofeedhercubs>Andshemustgettherebeforetheicebreaksup.Fornowthoughifsstillminusthirtydegreesandthecubsmusthavetheshelteroftheden senseofurgency.Atlastitseemsthatthey'llreadyfortheirjourneyandthey'reonlyjustintime,forafewmilesfromthecoasttheiceisalreadysplitting.Nowthemothercanstarthuntingforthesealstheymusthave,butshe'sleadinghercubsintoadangerousnewworld.Nearlyhalfofallcubsdieintheirfirstyearoutontheice.Summerbrings24hoursofsunlightandthethawingshiftinglandscape*FurthersouththewintersnowshavealmostclearedfromtheArctictundra.NorthernCanada'swildfrontier.Herenaturestagesoneofhergreatestdramas・EveryyearthreemillioncariboumigrateacrosstheArctictundra.Theimmensityoftheherdcanonlybeproperlyappreciatedfromtheair.Someherdstravelover2,000milesayearinsearchoffreshpastures.Thisisthelongestoverlandmigrationmadebvanyanimal.Theyfreconstantlyonthemove.NewborncalveshavetobeupandrunningthedaytheyarebomButthevastherdsdonottravelalone.Wolves.Packsofthem,eighttotenstrong,shadowthemigration*Andtheyarehungry.It*sthenewlyborncalvesthattheyareafter.Runningdirectlyattheherdisaploytogeneratepanic.Theherdbreaksupandnowit*seasiertotargetanindividual.Inthechaosacalfisseparatedfromitsmother.Thecalfisyoung,butitcanoutrunthewolfifonlyitmanagestokeepitsfooting.Atthisstagetheoddsareeven-eitherthecaribouwillmakeamistakeorafteramilethewolfwillgiveup.Midsummer onthetundraandthesundoesnotset.Attheselatitudesthesun*sraysareglancingandnotenoughoftheirenergyreachesthegroundtoenabletreestogrow.You'llneedtotravel500milessouthfromherebeforethatispossible*Thesestuntedshrubsmarkthetreeline・thebeginningoftheborealforest-thetaiga*Theneedle-shapedleavesoftheconifersarevirtuallyinediblesothisforestsupportsverylittleanimallife.It'sasilentplacewherethesnowisunmarkedbyfootprints.IntheArcticwintersnowformsacontinuousblanketacrosstheland.Butasspringcreepsupfromthesouththetaigaisunveiled.ThisvastforestcirclingtheglobecontainsathirdofallthetreesonEarthandproducessomuchoxygenitchangesthecompositionoftheatmosphere.Aswetravelsouthsothesunfsinfluencegrowsstrongerandat50degreesoflatitudearadicaltransformationbegins.Summersherearelongenoughforbroadleaftreestoreplaceconifers.BroadleavesaremucheasiertoeatanddigestsonowanimalscancollecttheirshareoftheenergythathascomefromthesumIt'ssummerandtheseforestsarebustlingwithlife.Butthegoodtimeswillnotlast.Broadleavesmustbeshedinwinterfortheirdamagebyfrost.Astheydisappear,sothelandbecomesbarrenwithlittleforanimalstoeatTheinhabitantsmustmigrate,hibernate,orfacemonthsofnearstarvation.TheAmurleopard-therarestcatintheworld.Here,inthedeciduousforestsof easternRussiathewintermakeshuntingverydifficult.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.Wholepopulationsofanimalsare nowforcedtotravelgreatdistancesinpursuitoffoodandwarmth.300,000BaikaltealgathertoescapefromtheSiberianwinterbymigratingsouthtoKorea・theworldfsentirepopulationinasingleflock.Buttherearepartsoftheworldthathavenoseasons.Inthetropicsthesunfsraysstriketheearthheadonandtheirstrengthismoreorlessconstantallyearround*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? Sheretires toconsiderherverdict.It'shardnottofeeldeflatedwhenevenyourbestisn'tgoodenough.Thesuninfluenceslifeintheoceansjustasitdoesonland.Itsrichestpartsarethosewherewavesandcurrentsbringfertilisingnutrientstosurfacewatersthatarebathedinsunlight*TheseasofftheCapeinSouthAfricahavethismagicrecipeandarehugelyproductive.Summeristhetimeofplentyandit'snowthatthesealsstarttobreed.Thestrikeofagreatwhitesharklastsameresecond.SlowingitdownfortytimesrevealsthetechniqueandimmensestrengthofthismassivepredatorIfsurprisefails,therewillbeachase.Thesharkisfasteronastraightcoursebutitcan'tturnassharplyastheseal,itsagilityversuspowerOncethesealshavefinishedbreedingthegiantsharkswillmoveon.It*snowbecomingdearthatgreatwhitesmigratethousandsofmilesacrosstheoceanstoharvestseasonalabundancesindifferentseas.Thesun,beatingdownontropicalwaters,powerstheweathersystemsoftheglobe.Moistureevaporatesfromthewarmingoceanandrisestocreategreatstorm&Thewindsgeneratedoutatseasweepinlandacrossthecontinents*AstheytravelacrosstheSaharatheycreatethebiggestofallsandstorms
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