Pfb
abbr. prefabricate(d) 预制（的）; preformed beam 预成形束; pseudofillicutitis barbae 假性毛囊炎
🗣️ 情景例句
I'm an exchange student.
我是一名交换学生。
Do you think the doctor could see me tomorrow before 9:30?
你看医生在明天9:30前能给我看病吗？
It was necessary, therefore, to invent instruments that neither slumbered nor slept.
因此，有必要发明一种仪器，既不打盹儿，也不睡觉。