Polyprotic acid
[化] 多元酸
🧩 词语组成解析
🗣️ 情景例句
Think about the word and use it, in your mind, in a sentence.
想想这个字，然后去用它，在脑子里，在句子里。
I'll be back in 5 days.
我五天之后回来。
It sounds like you enjoyed it.
听起来你好象蛮喜欢的。