What on earth are you doing?

你究竟在干什么？

《牛津词典》

What on earth are we fearful of?

我们到底在害怕什么？

youdao

Everything is all right. What on earth are you crying for?

好好儿的，你哭哪门子？

《新英汉大辞典》

But no matter what the size,tornado winds are the strongest on Earth.

VOA: special.2010.05.11

In the universe we-- Who knows what is out there in the universe but at least on Earth we may well be the only people there are.

在宇宙中，我们-,谁知道宇宙中有什么,但至少在地球上我们很可能是唯一的。

耶鲁公开课 - 死亡课程节选

What are you doing on this earth?

你活在这世界上是为了什么呢

耶鲁公开课 - 聆听音乐课程节选

So my question to Congress is: What on Earth are you waiting for?

WHITEHOUSE: President Obama Highlights the American Jobs Act

When she came out I was dripping with sweat, and she said 'What on earth are you doing?

NPR: In Death, Diana Got Through to Royals, Author Says

What on earth are they doing at a press interview?

BBC: Am I Sacha Baron Cohen's next target?