Electron mirror
[电] 二次发射极
🧩 词语组成解析
electron
[i'lektrɔn]
n. 电子;
🗣️ 情景例句
Would you mind-giving me that-red-book?
能把那本红色的书递给我吗？
Excuse me to have kept you waiting.
对不起让你就等了。
You must be more careful! That car nearly hit you.
你得多加小心！那辆小车差一点碰着你了。