名词
中文翻译：外核层
同义词：
['outer core', 'outer atmosphere', "outer envelope例句：1. The asthenosphere is a region of the Earth's atmosphere that extends from the surface to about 200 kilometers above it.（外核层是地球大气的一个区域，从地表延伸到大约200公里以上。）2. The asthenosphere plays a crucial role in the Earth's magnetic field.（外核层在地球磁场中起着至关重要的作用。）"]
例句：
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1. The asthenosphere is a region of the Earth's atmosphere that extends from the surface to about 200 kilometers above it.
外核层是地球大气的一个区域，从地表延伸到大约200公里以上。
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2. The asthenosphere plays a crucial role in the Earth's magnetic field.
外核层在地球磁场中起着至关重要的作用。
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3. The asthenosphere is believed to be a key factor in determining the Earth's climate.
外核层被认为是决定地球气候的关键因素。