Pfbc
[医][=pentafluoro-benzyl-chloroformate]五氟苯甲基氯甲酸酯
🗣️ 情景例句
I work part time in the summer to pay for my tuition.
我夏天做兼职来支付学费。
Custom is the guide of the ignorant.
习俗是无知者的向导。
Could I have those two tickets, please?
这两张票给我行不行？