中英释义：
双语例句
开启原水排放阀，直到出水清澈为止，然后关闭。
Open the raw water drain valve until the outlet water becomes clear, and then close the valve.
重点词汇
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排放阀
discharge valve
开启原水排放阀，直到出水清澈为止，然后关闭。
Open the raw water drain valve until the outlet water becomes clear, and then close the valve.
排放阀
discharge valve