Opticalmechnical
光学机械
🗣️ 情景例句
She was still beautiful at the age of forty.
她活到四十岁仍然很美。
Do you have any idea?
你怎么想？
Missed it! That was lucky. It can damage your car really badly.
躲过去了！真够幸运的。它会把车子撞坏的。