Optronics
光电子学, 光导发光学
🗣️ 情景例句
A gift from me.
这是我的一件礼物。
That man is a teacher,isn't he?
那个人是位教员，对不对？
You must have been mad to speak to the servant! She might have called for help.
你准是疯了，竟跟这个仆人说话。她可能会大喊救命的。