Emission electron
[医] 发射电子
🧩 词语组成解析
electron
[i'lektrɔn]
n. 电子;
🗣️ 情景例句
What am I supposed to do?
我该做什么？，
We tried in vain to make him change his mind.
我们试图使他改变他的主意，但白费力气。
Forty-two years later a tunnel was actually begun.
42年以后，隧道实际已经开始建了。