Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
Did you make any long distance calls this morning, or did you sign for your breakfast?
您今天早上没有打长途电话或吃早餐记账？
We can't eat so much.
我们不能吃那么多。
Yes, I do. But I walk sometimes.
是的，我通常骑车。但有时我也步行。