贸然的英文：
hastily; rashly

参考例句：

He rushed into the campaign without any political experience.
他没有任何政治经验就贸然参加了竞选。

You couldn't draw a hasty conclusion.
你不能贸然下结论。

regret rushed decisions
对贸然做出的决定感到懊悔

We should not jump to a conclusion prematurely.
我们不能贸然下定论。

We must not rush into anything without careful planning.
任何事情我们没有经过仔细筹划就不可贸然从事。

hastily是什么意思：
adv. 匆忙地，仓促地

Then they hastily came to his defence.
这时他们急忙来为他辩解。

To arrange, do, or make hastily or carelessly.
急速草率地行事仓促或草率地安排或做

He hastily scrawled something on the paper.
他匆忙地在纸上潦草地写些什麽。

Nothing must be done hastily But killing of fleas
除非消灭跳蚤,做事不必急躁

work hastily or carelessly; deal with inadequately and superficially.
草率或粗心地工作；不适当或肤浅地处理。

rashly是什么意思：
ad. 轻率地,无见识地

To speak mistakenly,inappropriately,or rashly.
讲错了话错误地、不合适地或过于匆忙地讲话

Things rashly taken end as ill
草率从事没有好结果

If you act rashly, you'll suffer for it.
蛮干是要吃苦头的。

Some people jump rashly to the conclusion that something must be wrong.
有些人轻率地得出结论说一定是出了什么问题。

Walking to the first tee, I rashly remarked that if the light rain didn't get worse, we could have a pleasant round.
走到第一个球座，我不小心脱口而出，说如果这点小雨不下大的话，我们就能高兴地玩一轮了。