If you can manage to do that before the New Year, you'll have a blast .

如果你在新年以前可以把计划列好的话，你就有时间好好玩玩啦。

If, for instance, you have a ball held up in the air by a blast of air , it is floating on air .

例如，你有一个球是通过空气爆发的方式被举起来的，它现在就浮在空气当中。