Give me one good reason why I should help you.

我为什么要帮你？给我一个充分的理由。

《牛津词典》

Kate gives a good reason for her decision.

凯特为她的决定给出了一个很好的理由。

youdao

They'll tease you because you're different, or for no good reason.

他们也许会因为你的独特或者其他不太好的原因而取笑你。

youdao

He even said the South had good reason to leave the Union, if northern Abolitionists continued their anti-slavery campaign.

VOA: special.2009.05.07

Is there any good reason to believe that we don't believe that we're going to cease to exist as a person?

有没有一个好的理由相信,我们不相信,自己会停止作为一个人的存在呢？

耶鲁公开课 - 死亡课程节选

The question we're asking is, "Is there a good reason to add to our list of things there are?

我们的问题是,有没有一个很好的理由,让我们往已写有东西的清单上再添上几笔

耶鲁公开课 - 死亡课程节选

And the question in the case today was whether prosecutors really had another good reason or not.

NPR: Slate's Jurisprudence: Court Passes on Padilla Case

Kentucky that prosecutors have to have a good reason for striking a black or Hispanic or Asian juror.

NPR: Slate's Jurisprudence: Court Passes on Padilla Case

For good reason nearly two-thirds of Americans say they want to stay out of Libya.

FORBES: Libya: Another Unnecessary War Of Choice