Pfbc
[医][=pentafluoro-benzyl-chloroformate]五氟苯甲基氯甲酸酯
🗣️ 情景例句
We'd wait until dark and make a fire,
我们等到天黑就升火，
When Emily came home at three in the morning, her father hit the ceiling.
哎米莉在凌晨2点钟回家时，她父亲大发雷霆。
Oh, good. We're in the same class.
我们在一个班的。