从7位最初的水星宇航员中,其中三位被选为第一次美国载人航天的候选人:约翰.格伦,加斯.格里森和谢泼德。
Out of the seven original Mercury astronauts, three of them were selected as candidates for the first manned U.S. spaceflight: John Glenn, Gus Grissom and Shepard.
与俄亥俄州民主党参议员约翰•格伦竞选绝非易事。
It is no easy job to run against John Glenn, Ohio's Democratic senator.
约翰·格伦完成历史性轨道飞行后,友谊7号火箭横穿国家地理杂志封面。
Friendship 7 rockets across the cover of National Geographic after John Glenn's historic orbital voyage.
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