Helitron
[电] 电子螺旋管
🗣️ 情景例句
The case was dismissed because of insufficient evidence.
该案因证据不足而撤消。
What do you want to be when you finish your training?
当你完成训练的时候，你要做什么？
Last year a journalist had been instructed by a well-known magazine to write an article on the president's palace in a new African republic.
去年，一位记者受一家有名的杂志的委托写一篇关于非洲某个新成立共和国总统府的文章。