Tmah
[医][=tetramethylammonium hydroxide]羟化四甲铵
🗣️ 情景例句
I'm quite active and energetic.
我积极而充满活力。
May I speak to Mr. Johnson, please?
我想请约翰先生听电话好吗？
I'm sorry, these 2 books are 3 days overdue.
小姐，对不起，这两本书已经过期3天了。