It's a completely different thing, and we'd never pretend otherwise.

这完全是不同的，我们从不假装如此。

youdao

It's one thing to come up with million dollar ideas, but a completely different thing to act on them.

想出百万美元的点子是一回事儿，去实现则是完全不同的另一件事儿。

youdao

Learning about other cultures in school is one thing, but actually experiencing a culture is completely different.

在学校了解其他文化是一回事，但真正体验一种文化完全是另一回事。

youdao

It is a completely different thing from the Apoikia that I've been talking about.

这跟我之前说过的Apoikia,是完全不同的

耶鲁公开课 - 古希腊历史简介课程节选

Absolutely. But that's a quite different thing and I completely agree with you on that.

的确，这个我讲的是不同的事情,但我完全同意您的观点。

普林斯顿公开课 - 人性课程节选

Maybe A could be the same thing as B in this logically possible world, but we could imagine a completely different logically coherent world in which A was not the same thing as B.

也许在这某个逻辑世界里,A会和B是同一个东西,但我们可以想象,一个完全不同的另一个逻辑世界里,A和B不是同一个东西

耶鲁公开课 - 死亡课程节选

That is a completely different thing.

FORBES: How To Regulate Robots With Fat Fingers

"Yes, but reality is one thing and fantasy is completely a different thing, " he responded.

WSJ: Jury nears deliberations in NYC cannibal-plot case

However, success in Japan is one thing, and taking on Manchester United is a completely different challenge.

CNN: Gamba Osaka - Kings of Asia