Pfbc
[医][=pentafluoro-benzyl-chloroformate]五氟苯甲基氯甲酸酯
🗣️ 情景例句
This is fun. It's a piece of cake.
有意思 毫不费力。
Let us imagine a hypothetical case where we disagree.
让我们假设一个我们不同意的状况。
I wish I had your will power.
但愿我有你的意志力。