Optronics
光电子学, 光导发光学
🗣️ 情景例句
You're ahead.
你领先呢。
I told him to stay till he comes back.
我告诉他留下来等他回来。
One day, the Shutes heard that there was a good doctor in a town not far away.
有一天，舒特家人听说不远的镇上有一位好医生。