PleaseListentothefollowingTEDtalkandanswerthequestionsfollowed. (1分11秒-55秒） WhathappenedwhenthespeakerjustbuilttheinstrumentwithhisteamtoproposeanexperimenttoflytoVenus?
PleaseListentothefollowingTEDtalkandanswerthequestionsfollowed. (1分11秒-55秒） WhathappenedwhenthespeakerjustbuilttheinstrumentwithhisteamtoproposeanexperimenttoflytoVenus?
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