推荐下载BBC经典《行星地球》英文解说词全集文档格式.docx

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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.Surelynogreaterordealisfacedbyanyanimal.AsthesundepartsfromtheAntarcticitlightenstheskiesinthefarnorth.It'

sMarchandlightreturnstothehighArctic,sweepingawayfourmonthsofdarkness.Apolarbearstirs.Shehasbeeninherdenthewholewinter.Heremergencemarksthebeginningofspring.Aftermonthsofconfinementundergroundshetoboggansdowntheslope.Perhapstocleanherfur,perhapsforsheerjoy。

Hercubsgazeoutoftheirbrightnewworldfortheveryfirsttime。

Thefemalecallsthem，butthissteepslopeisnottheeasiestplacetotakeyourfirststeps.Buttheyarehungryandeagertoreachtheirmother，who’sdelayedfeedingthemonthisspecialday.Nowsheluresthemwiththepromiseofmilk，theonlyfoodthecubshaveknownsincetheywereborndeafandblindbeneaththesnowsometwomonthsago.Theirmotherhasnoteatenforfivemonthsandhaslosthalfherbodyweight.Nowsheconvertsthelastofherfatreservesintomilkforhercubs.Thespringsunbringswarmthbutalsoaproblemforthemother.Itstartstomelttheseaice.Thatiswhereshehuntsforthesealsheneedstofeedhercubs.Andshemustgettherebeforetheicebreaksup。

Fornowthoughit’sstillminusthirtydegreesandthecubsmusthavetheshelteroftheden.It’ssixdayssincethebearsemergedandspringisadvancingrapidly.Butevennowblizzardscanstrikewithoutwarning。

Beingsosmall,thecubsareeasilychilledandtheywillbemorecomfortablerestingintheden.Buttheirmothermustkeepthemoutandactive。

She'

sbecomingweakfromhungerandthere’snofoodonthesenurseryslopes。

Theseaicestillholdsfirm,butitwon’tlastmuchlonger。

Day10，andthemotherhasledhercubsamilefromtheden。

It’stimetoputthemtothetest。

They'

vegrownenormouslyinconfidence,buttheydon'

thavetheirmother’ssenseofurgency。

Atlastitseemsthatthey’rereadyfortheirjourneyandthey’reonlyjustintime,forafewmilesfromthecoasttheiceisalreadysplitting.Nowthemothercanstarthuntingforthesealstheymusthave，butshe’sleadinghercubsintoadangerousnewworld。

Nearlyhalfofallcubsdieintheirfirstyearoutontheice.Summerbrings24hoursofsunlightandthethawingshiftinglandscape。

FurthersouththewintersnowshavealmostclearedfromtheArctictundra.NorthernCanada'

swildfrontier.Herenaturestagesoneofhergreatestdramas—EveryyearthreemillioncariboumigrateacrosstheArctictundra.Theimmensityoftheherdcanonlybeproperlyappreciatedfromtheair。

Someherdstravelover2,000milesayearinsearchoffreshpastures.Thisisthelongestoverlandmigrationmadebyanyanimal。

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，beatin