Pertungstate
过钨酸盐
🗣️ 情景例句
Oh, yes, I think we'd like that very much.
噢 ，好的， 我想我们非常乐意。
Who has never tasted bitter, knows not what is sweet.
不尝黄连苦，怎知蜂蜜甜。
What are you doing?
你在干什么？