英语词汇“sewer trap”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	sewer trap
释义	sewer trap building trap, main trap building trap A running trap on the outlet side of a building drain (on the sewer side of all drain connections); prevents the passage of odors between the common sewer and the plumbing of the building.
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sewer trap