- 问题详情:SevenyearsofcarefuldesignandplanningallcametogetheronMonday,whenJamesCameronbecamethefirsthumantomakeasolotriptothedeepestknownpointonearth-theChallengerDeep!Moreimportantlythough,heappearedsafelysevenhourslater, completingwithexciting-photo...
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