名词
中文翻译：太空学员
同义词：
['astronaut', 'cosmonaut例句：1. He was a space cadet before he became an astronaut.（他成为宇航员之前是一名太空学员。）2. The astronaut had to undergo rigorous training before they could fly in space.（这位宇航员在飞入太空之前必须接受严格的训练。）3. The young astronaut was thrilled to be on the International Space Station.（这位年轻的宇航员在国际空间站上感到兴奋不已。）']
例句：
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1. He was a space cadet before he became an astronaut.
他成为宇航员之前是一名太空学员。
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2. The astronaut had to undergo rigorous training before they could fly in space.
这位宇航员在飞入太空之前必须接受严格的训练。
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3. The young astronaut was thrilled to be on the International Space Station.
这位年轻的宇航员在国际空间站上感到兴奋不已。