Fif
[医][=feedback inhibition factor]反馈抑制因子
🗣️ 情景例句
I can learn something
我能学到一些东西。
She is very fed up about it.
她对此非常不满。
Beggars almost sell themselves as human being to arouse the pity of passers-by.
好像只有流浪汉是个例外，乞丐出售的几乎是他本人，以引起过路人的怜悯。