That's all there is to it!

如此而已，岂有他哉！

《新英汉大辞典》

That's really all there is to it.

真的就这些。

youdao

And that's really all there is to it.

这是真的。

youdao

Today,the solution to the problem is so common that it is difficult to understand that there was a problem at all.

VOA: special.2010.07.14

It doesn't make sense to think that the price of anything would go up if that's all there is to it.

可如果升值是一种必然趋势,期待升值还有什么意义呢

耶鲁公开课 - 金融市场课程节选

Sometimes that's called sharing and that's all there is to it, really.

有时候叫做共享数据,这就是所有的东西，真的。

哈佛公开课 - 计算机科学课程节选

But getting noticed isn't all there is to it--you want to get noticed for the right reasons.

FORBES

"I wish that I'd gone round, but I didn't and that's all there is to it, " she adds.

BBC: Kathy Etchingham: Life as Jimi Hendrix's 'Foxy Lady'

However, this might not be quite all there is to it.

FORBES: Apple Might Have a Serious Problem With Proview and the iPad Trademark