讲解文本：

on a roll 做得很顺，顺风顺水，走好运
Our team is on a roll. We have won most of our games.
我们队现在顺风顺水，大部分比赛都赢了。
Her business is really on a roll recently.
她最近的业务做得顺风顺水。

疯狂练习吧！