Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
there's a lot to do around the house,
这屋里有很多事可做，
After my core courses are finished, I'll be doing independent study.
在完成基础课程之后，我将作独立的研究。
Here you can see two workers who, between them, have just finished cutting three cartloads of golden brown macaroni stalks.
这里您可以看到两个工人，他们协力割下了3车金黄色的通心粉秸。