名词
中文翻译：海沟
同义词：
['seafloor trough', 'ocean floor trough']
例句：
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1. The shipsank into the trough of the sea.
船沉入海底。
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2. The scientists discovered a new trough of the sea.
科学家们发现了一个新的海底沟渠。
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3. The trough of the sea is home to many marine species.
海底沟渠是许多海洋物种的家园。