Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
Can I help?
要我帮忙吗？
If you have cows you have to get up early to do the milking.
如果你有奶牛，你不得不早起挤奶。
The opinion does not survive experience of a popular Continental camping place.
但这种说法在受人欢迎的欧洲露营场地是站不住脚的。