Optronics
光电子学, 光导发光学
🗣️ 情景例句
I hope to come back to the mode of payment.
我希望回过头来讨论付款方式。
The worst men often give the best advice.
最不行的人，往往能提出最好的意见。
I ought to go home. I have to cook supper for my grandmother.
我该回家了。我得给奶奶做晚饭。