Afn
abbr. 平均故障数（average failure number）
🗣️ 情景例句
I was really worried.
刚才我真的很担心。
A good tale is none the worse for being twice told.
好故事百听不厌。
When the dentist at last removed the cotton wool from my mouth,
当那位牙医最后将药棉从我嘴中取出时，