Afr
[计] 容许故障率
🗣️ 情景例句
Why is that necessary?
为什么有此必要
He that is ill to himself will be good to nobody.
不知自爱的人也不会爱别人。
He had hardly had time to settle down when he sold the house and left the country.
还没等安顿下来就卖掉了房子，离开了这个国家。