Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
Good. Thank you. I'll be right down.
好，谢谢你。我马上下来。
I'll connect you with his office.
我会打电话到他的公司和你联络。
The man let out cry and jumped back several paces.
那人大叫了一声，惊退了几步。