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ID:40700948
大小:20.34 KB
页数:6页
时间:2019-08-06
《BBC《行星地球》第二集解说词》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2.MountainsHumanbeingsventureintothehighestpartsofourplanetattheirperil.Somemightthinkthatbyclimbingagreatmountaintheyhavesomehowconqueredit,butwecanonlybevisitorshere.Thisisafrozenalienworld.Thisistheotherextreme-oneofthelowesthottestplacesonEarth.It'soverahundredmetresbelowt
2、helevelofthesea.Buthereamountainisingestation.Poolsofsulphuricacidareindicationsthatdeepundergroundtherearetitanicstirrings.ThisistheDanakilDepressioninEthiopia,lyingwithinacolossalrentoftheearth'ssurfacewheregiantlandmassesarepullingawayfromoneanother.Lavarisestothesurfacethr
3、oughthiscrackinthecrustcreatingachainofyoungvolcanoes.Thisone,ErtaAle,istodaythelongestcontinuallyeruptingvolcanoontheplanet,alakeoflavathathasbeenmoltenforoverahundredyears.ThesesamevolcanicforcesalsocreatedEthiopia'shighlands.70millionyearsagothislandwasjustasflatandasdeepas
4、theDanakilDepression.Moltenlavarisingfromtheearth'scoreforcedupahugedomeofrock500mileswide,theroofofAfrica.Overmillennia,rainandicecarvedtherockintoalandscapeofspiresandcanyons.Thesesummits,nearly3milesup,arehometosomeveryremarkablemountaineersGeladababoons.Theyareuniquetotheh
5、ighlandsofEthiopia.Thecliffswheretheysleepareforexpertclimbersonly,andGeladocertainlyhavetherightequipment.thestrongestfingersofanyprimateandanutterlyfearlessdisposition.Butyouneedmorethanaheadforheightstosurviveuphere.AdayinaGelado'sliferevealshowthey'verisentothechallenge.Fo
6、rallmonkeysmorningisgroomingtime,achancetocatchupwithfriends.But,unlikeothermonkeys,Geladoschatterconstantlywhiletheydoit.It'sagreatwaytonetworkwhileyourhandsarebusy.Butthesesocialscan'tgoonfortoolong.Geladoshaveabusydailyscheduleandthere'sworktobedone.Mostmonkeyscouldn'tliveu
7、phere.There'snofoodandfewinsectstofeedon.ButGeladosareuniquethey'retheonlymonkeysintheworldthatlivealmostentirelyongrass.Theyliveinthelargestassembliesformedbyanymonkeys.Somegroupsare800strongandtheycropthehighmeadowslikeherdsofwildebeest.TheGeladosgrazealongsideWaliaibex,whic
8、harealsouniquetothesehighlands.Theserarecreaturesareusuallyve
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