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- 问题详情：NASAismovingaheadwithplanstoputalong-armedLanderonMars’icyNorthPoletosearchforcluesforwaterandpossiblesignsoflife.The$386millionPhoenixMarsisplannedtotouchdownintheMartianarcticin2008.Thestationaryprobewilluseitsroboticarmtodigintotheicyland...
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