Opticalmechnical
光学机械
🗣️ 情景例句
That's great. I'll come back right after the formalities.
那太好了。手续办完后我就回来。
It's certainly a big improvement over yestterday.
肯定比昨天大有好转。
No hurry! Please take your time!
甭着急！请慢慢看！