BBC《行星地球》第二集解说词

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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