Sbf
[医][=serologic-blocking factor]血清封闭因子，血清阻断因子
🗣️ 情景例句
Don't be such a grouch.
不要总是牢骚满腹。
Whatever happens, don't worry.
不管什么事情发生，你都不要担心。
He calls at every house in the street once a month and always asks for a meal and a glass of beer.
他每月对这条街上的每户人家光顾一次，总是请求给他一顿饭和一杯啤酒。