Prenitic acid
[化] 苯四酸
🧩 词语组成解析
🗣️ 情景例句
Is smoking allowed on the train?
火车上允许吸烟吗？
A man cannot whistle and drink at he same time.
一心不能二用。
I don't want to know what it's been; I want to know what it is now.
我不想知道它曾经是什么；我想知道它现在是什么。