Bcf
[医][=bacterial chemotactic factor]细菌趋化性因子
🗣️ 情景例句
Lacks confidence and poise is nervous and ill at ease.
信心不足，不够自信，精神紧张，心神不定。
The master always exacts quality work from his students.
老师常常要求学生们认真踏实的完成功课。
She said her future husband would not let her make another film.
她说她的未婚夫不会再让她拍电影。