名词
中文翻译：防水井盖
同义词：
['waterproof manhole', 'water-tight manhole']
例句：
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1.The engineers had to install a new watertight manhole before the construction began.
工程师们在施工开始前必须安装一个新的防水井盖。
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2.The old manhole was leaking, and we needed to replace it with a watertight manhole.
旧的排水井正在漏，我们需要用一个防水井盖来替换它。
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3. The maintenance crew quickly replaced the damaged watertight manhole, ensuring that the area remained safe for pedestrians.
维修团队迅速更换了损坏的防水井盖，确保该区域对行人安全。