Polyprotic acid
[化] 多元酸
🧩 词语组成解析
🗣️ 情景例句
That's right.
是的。
Friends are like fiddle-strings,they must not be screwed too tight.
朋友有如琴弦，不能上的太紧。
I would make a very poor show of disputing the ownership of a cave with a bear,
要我和一只熊去争洞穴，我会出洋相的；