Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
Right over here, Grandpa.
请到这儿来 ，爷爷。
He was born with a silver spoon in his mouth.
他生在富贵人家。
One of the first jobs when you start work in an office is to learn how to use every piece of equipment.
你在办公室开始工作的第一件事就是要学会怎样使用办公室里的每样设备。