Prechlorination
预加氯
🗣️ 情景例句
And then he takes it back
然后 ，他就把它收回去
You've been caught cheating, now y ou must face the music.
你作弊被当场抓住，这下你得承担自己行为的后果了。
He's very well, thank you.
他很好，谢谢您。