Fotodiode
光电二极管
🗣️ 情景例句
I love you, Grandpa.
我爱你， 爷爷。
How have you been?
你过的还好吗？
Later we learnt that there was a very important person on board.
后来我们才得知，飞机上坐了一位非常重要的人物。