五十年前，当艾伦·谢波德进入墨丘利号太空舱等待发射升空时，所有的一切对于羽翼未丰的美国太空计划都显得十分残酷。
Fifty years ago when Alan Shepard climbed inside his Mercury capsule to blast off into space, things were looking pretty grim for the fledgling U.S. space program.
五十年前，当艾伦·谢波德进入墨丘利号太空舱等待发射升空时，所有的一切对于羽翼未丰的美国太空计划都显得十分残酷。
Fifty years ago when Alan Shepard climbed inside his Mercury capsule to blast off into space, things were looking pretty grim for the fledgling U. S. space program.
五十年前，当艾伦·谢波德进入墨丘利号太空舱等待发射升空时，所有的一切对于羽翼未丰的美国太空计划都显得十分残酷。
Fifty years ago when Alan Shepard climbed inside his Mercury capsule to blast off into space, things were looking pretty grim for the fledgling U. S. space program.
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