名词
中文翻译：底部
同义词：
['ground', 'floor', 'groundwork例句：1. The bottom of the ocean is home to many species of fish.（海洋的底部是许多鱼类的家园。）']
例句：
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1. The bottom of the ocean is home to many species of fish.
海洋的底部是许多鱼类的家园。
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2.The bottom of the lake is covered in weeds.
湖底长满了水草。
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3.The bottom of the ocean is a mystery that scientists are still trying to solve.
海洋的底部是一个科学家仍在试图解决的谜团。