Opticalmechnical
光学机械
🗣️ 情景例句
Well, do we have a date?
怎样 ，我们算是约定了吗？
Some persons do first, think afterwards, and then repent for ever.
有些人做了再思考，从而悔恨终身。
You must have been driving at seventy miles an hour.
你刚才一定是以每小时70英里的速度开车。