名词
中文翻译：Unknown
同义词：
['submerge', 'descend', 'sink', 'plunge', 'submerge', 'dive', 'descend', 'sink', 'plunge例句：1. The ship dropped down into the depths of the ocean.（船沉入海底。）']
例句：
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1. The ship dropped down into the depths of the ocean.
船沉入海底。
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2.The boat was lost in the storm and had to drop down to avoid being washed away.
船只在暴风雨中失事，不得不下沉以避免被冲走。
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3.The plane dropped down from the clouds and landed safely on the runway.
飞机从云层中下降并安全着陆在跑道上。