名词
中文翻译：Unknown
同义词：
['gaseous layer', 'gaseous envelope']
例句：
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1. The gaseous envelope is essential for the survival of life on Earth.
气体包层对于地球上生命的生存至关重要。
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2. The gaseous envelope acts as a barrier between the planet and the outer space.
气体包层作为行星与外太空之间的屏障。
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3. The gaseous envelope contains a mixture of gases that can be used to power spacecraft.
气体包层包含一种混合物，可以用于为航天器提供动力。