Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
Good-bye.
再见。
They say everything.
他们什么事都说。
Three months passed, and then one morning, Sam found his wallet outside his front door.
3个月过去了，后来在一天早晨，萨姆在自己的大门外发现了他的钱包。