Photocathode
n. 光电阴极
🗣️ 情景例句
Couldn't you sell us one carton for-?
不能以每盒--卖给我们吗？
No. I went to California for a few weeks.
没有。我上加利福尼亚去了几个星期。
I tried losing weight, but nothing worked.
我曾试着减肥，但是毫无效果。