Electron mirror
[电] 二次发射极
🧩 词语组成解析
electron
[i'lektrɔn]
n. 电子;
🗣️ 情景例句
the minute he comes home.
他一回来。
Don't forget to buy it for him.
不要忘记买给他。
It's eight thirty-five.
八点三十五。