Fif
[医][=feedback inhibition factor]反馈抑制因子
🗣️ 情景例句
Are you carrying any items that need to be declared?
你没有携带需要申报的东西吗？
The outdoor concert was called off due to the weather.
露天音乐会由于天气原因被取消。
I had forgotten all about the snails when Robert suddenly said that I must stay to dinner.
我把蜗牛的事已忘得一干二净，罗伯特突然提出一定要我留下来吃晚饭，这才提醒了我。