Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
Good afternoon. Make yourself at home.
下午好。请随便些。
The coach is always gloomy when the team loses a game.
球队一输球，教练总要绷起脸来。
The truck was coming round the corner near the school.
这辆卡车正饶着学校附近的拐弯处驶过来。