Smokatron
烟圈式加速器, 电子环加速器
🗣️ 情景例句
And I don't have to make a quick decision.
而且我也不需很快下决定。
The tour will take about an hour and a half. We ought to be back here by 3:00.
参观大概要一个半小时，3点钟以前回到这里。
When are you leaving?
你什么时候离开？