Corotron
电晕管； 电晕发射装置
🗣️ 情景例句
Could you tell me a little about your background?
能否请您简短地谈一下贵公司的背景？
Did you go to the concert yesterday?
你昨天去听音乐会了吗？
Which person do you think is qualified for the job?
你认为哪一个人能胜任这份工作？