名词
中文翻译：底部
同义词：
['base', "underside例句：1. The bottom of the ocean is a mysterious place.（海洋的底部是一个神秘的地方。）2. The car's bottom was scratched by the stone.（汽车的底部被石头刮伤了。）"]
例句：
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1. The bottom of the ocean is a mysterious place.
海洋的底部是一个神秘的地方。
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2. The car's bottom was scratched by the stone.
汽车的底部被石头刮伤了。
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3. The bottom layer of the soil is rich in nutrients.
土壤的最底层富含养分。