Echothiophate
[医] 二乙氧膦酰硫胆硷
🗣️ 情景例句
How long do you intend to stay?
你打算在这儿呆多久？
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
I got very angry.
我非常生气，