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ID:51961496
大小:20.34 KB
页数:6页
时间:2020-03-20
《BBC《行星地球》第二集解说词.doc》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、2.MountainsHumanbeingsventureintothehighestpartsofourplanetattheirperil.Somemightthinkthatbyclimbingagreatmountaintheyhavesomehowconqueredit,butwecanonlybevisitorshere.Thisisafrozenalienworld.Thisistheotherextreme-oneofthelowesthottestplacesonEarth.It'soverahundredmetresbelowthelevelo
2、fthesea.Buthereamountainisingestation.Poolsofsulphuricacidareindicationsthatdeepundergroundtherearetitanicstirrings.ThisistheDanakilDepressioninEthiopia,lyingwithinacolossalrentoftheearth'ssurfacewheregiantlandmassesarepullingawayfromoneanother.Lavarisestothesurfacethroughthiscrackint
3、hecrustcreatingachainofyoungvolcanoes.Thisone,ErtaAle,istodaythelongestcontinuallyeruptingvolcanoontheplanet,alakeoflavathathasbeenmoltenforoverahundredyears.ThesesamevolcanicforcesalsocreatedEthiopia'shighlands.70millionyearsagothislandwasjustasflatandasdeepastheDanakilDepression.Mol
4、tenlavarisingfromtheearth'scoreforcedupahugedomeofrock500mileswide,theroofofAfrica.Overmillennia,rainandicecarvedtherockintoalandscapeofspiresandcanyons.Thesesummits,nearly3milesup,arehometosomeveryremarkablemountaineersGeladababoons.TheyareuniquetothehighlandsofEthiopia.Thecliffswher
5、etheysleepareforexpertclimbersonly,andGeladocertainlyhavetherightequipment.thestrongestfingersofanyprimateandanutterlyfearlessdisposition.Butyouneedmorethanaheadforheightstosurviveuphere.AdayinaGelado'sliferevealshowthey'verisentothechallenge.Forallmonkeysmorningisgroomingtime,achance
6、tocatchupwithfriends.But,unlikeothermonkeys,Geladoschatterconstantlywhiletheydoit.It'sagreatwaytonetworkwhileyourhandsarebusy.Butthesesocialscan'tgoonfortoolong.Geladoshaveabusydailyscheduleandthere'sworktobedone.Mostmonkeyscouldn'tliveuphere.There'snofoodandfewinsectstofeedon.ButGela
7、dosareuniquethey'retheonlymonkeysintheworldthatlivealmostentirelyongrass.Theyliveinthelargestassembliesformedbyanymonkeys.Somegroupsare800strongandtheycropthehighmeadowslikeherdsofwildebeest.TheGeladosgrazealongsideWaliaibex,whicharealsouniquetothesehighlands.Theserarecreaturesareusua
8、llyve
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