名词
中文翻译：水下填充物
同义词：
['submerged fill', 'underwater material']
例句：
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1.The ship sank due to a sudden underwater fill.
由于突然的水下填充，船只沉没了。
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2. The engineer used a special underwater fill to repair the leak.
工程师使用一种特殊的水下填充物来修复泄漏。
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3.The underwater fill was carefully removed before we could continue our exploration.
在继续我们的探索之前，我们小心翼翼地移除了水下填充物。