Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
We must prepare ourselves to have a hard time.
我们必须准备过艰苦的日子。
No road is long with good company.
途有好伴，不觉路远。
Next Annie took me by the hand and taught me how to jump.
接着，她又拉着我的手，教我如何跳。