astronaut 宇航员 ; 太空人 ; 宇宙航行员
The Astronaut Farmer 农民宇航员 ; 太空农夫 ; 农夫宇航员
lead astronaut 领航宇航员
The Little Astronaut 小小太空人
Astronaut training 训练宇航员 ; 航天员训练模拟器
an astronaut 宇航员 ; 一位宇航员
The Astronaut Wives Club 宇航员之妻 ; 宇航员的妻子 ; 宇航员妻子俱乐部
The American Astronaut 美国宇航员
BackgroundA great deal of scientific data and experiments have indicated weightlessness andsimulated microgravity can lead to apparent muscle atrophy. Muscle atrophy affects astronaut performance both in- and post flight.
研究背景:大量的研究数据和实验资料表明,在失重和模拟失重条件下,骨骼肌会出现明显的废用性萎缩,不仅对航天员返回时的救生构成严重威胁,而且影响航天员返回地面后的再适应能力,因此,寻找有效的预防和治疗肌萎缩的药物,是航天医学领域亟待解决的重要课题之一。
参考来源 - 当归和川芎对尾部悬吊大鼠比目鱼肌的影响及其机制研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N-COUNT An astronaut is a person who is trained for travelling in a spacecraft. 宇航员
欢迎女宇航员！
You're such a brave little astronaut.
你是一个多么勇敢的小航天员。
Then what happened to the astronaut?
那个宇航员发生了什么事？
The United States had sent an astronaut of its own into space for the first time in nineteen sixty-one.
VOA: special.2009.07.08
NASA said its astronaut candidates had to be between twenty-five and forty years old and in excellent health.
VOA: special.2009.06.10
For example, one American astronaut on a four-month long mission on the Russian space station Mir saw a vision of his dead father.
VOA: special.2010.02.24
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