Pfbc
[医][=pentafluoro-benzyl-chloroformate]五氟苯甲基氯甲酸酯
🗣️ 情景例句
He did it in no time.
他马上做了那件事。
Choose an author as you choose a friend.
选书如择友。
Can your mechanics repair it?
你们的机械师能修好吗？