She had rashly promised to lend him the money.

她轻率地答应借钱给他。

I made a lot of money, but I rashly gave most of it away.

我赚了很多钱，但我轻率地挥霍了其中的大部分。

We should not rashly accept battle.

不可率尔应战。

If you act rashly, you'll suffer for it.

蛮干是要吃苦头儿的。

She decided rashly to go there.

她决定去那里太轻率了。