Photocathode
n. 光电阴极
🗣️ 情景例句
I need some.
我确实需要。
The restaurant is downstairs.
那餐厅在楼下。
But it is also used very widely as a foreign language in many other countries in the world.
然而在世界上其他许多的国家英语也被当作一门外语广泛地使用。