Sequestrant
n. [化](多价)螯合剂
🗣️ 情景例句
How many karats do you want?
你要几克拉的？
Now you are scared, aren't you?
怕了吧？
No, Mrs Brown. Your son's trouble is very common these days. It happens all the time. It comes and goes very quickly. He'll get well soon.
是的，布朗太太。你儿子的毛病现在是极常见的，经常有的。它来得快，去得也快。他不久就会好的。