Afr
[计] 容许故障率
🗣️ 情景例句
There is still a week to go before the vacation begins.
现在距离假期还有一星期。
I said, Do you want me to help you?
我是说:你要我帮忙吗？"
Boy, I'm really glad to hear that.
哇，听了真叫人高兴。