名词
中文翻译：地球覆盖层
同义词：
["Earth's cover", "Earth's crust", "Earth's mantle"]
例句：
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1. The earth covering is essential for the survival of life on Earth.
地球覆盖层对于地球上生命的生存至关重要。
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2.The earth covering has been studied extensively in recent years.
近年来，对地球覆盖层的研究非常广泛。
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3.The earth covering is constantly changing due to natural processes.
由于自然过程的不断作用，地球覆盖层正在不断变化。