名词
中文翻译：洗井阀
同义词：
['wash-out valve', 'wash-outplug']
例句：
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1. The engineers were working on the new washing outvalve design.
工程师们正在研究新的洗井阀设计。
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2. The old valve was wornout and needed to be replaced.
旧阀门磨损严重，需要更换。
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3. Theengineers used a specialtool to remove the stuck valve.
工程师们使用特殊的工具来移除卡住的阀门。