Photoelectric cathde
[电] 光电阴极
🧩 词语组成解析
🗣️ 情景例句
Going swimming should be a good way of letting your hair down after a hard day's work.
游泳是在辛苦了一天后放松自己的好方法。
I checked my baggage in the baggage section.
我在行李房托运行李。
You can smoke in the entrance hall. Or outside, of course.
你可以在门厅里吸烟。当然，你也可以在室外吸烟。