名词
中文翻译：航天器
同义词：
['spacecraft', 'spaceship']
例句：
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1.The astronauts are training for their upcoming mission to Mars.
宇航员们正在为即将到来的前往火星的任务进行训练。
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2. The astronauts have been exploring the far reaches of the solar system.
宇航员们一直在探索太阳系的遥远角落。
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3.The astronauts are using sophisticated technology to navigate through the cosmos.
宇航员们正使用先进的技术来穿越宇宙。