Optronics
光电子学, 光导发光学
🗣️ 情景例句
The professor runs a restaurant on the side.
这个教授的副业是开饭馆。
I wonder if it will snow tonight.
我不知道今晚会不会下雪。
If, at the time, the British had not feared invasion, it would have been completed.
如果不是因为那时英国人害怕入侵，隧道早已建成了。