名词
中文翻译：升空
同义词：
['lift', 'ascend', 'soar例句：1. The astronauts were levitating in space when the emergency happened.（宇航员在太空中升空时发生了紧急情况。）']
例句：
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1. The astronauts were levitating in space when the emergency happened.
宇航员在太空中升空时发生了紧急情况。
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2. The bird soared high above the trees.
那只鸟在树梢上空高高地飞翔。
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3.The rocket lifted off with a loud roar.
火箭轰鸣着升空了。