Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
If you have any trouble, let me know.
如果你有任何的麻烦，请告诉我。
There are one hundred pennies in every dollar.
每美元是一百美分。
When he returned to India he spoke in public about the situation in South Africa.
当他加到印度之后，他还就南非的形势公开发表演说。