Optronics
光电子学, 光导发光学
🗣️ 情景例句
Well, glad to meet you.
是吗，很高兴认识你。
To catch the ball
捕球
She watched TV for half an hour after supper. Then she started her homework.
晚饭后她看了半小时电视。然后她开始做家庭作业。