What are they up to?

他们安的是什么心？

《新英汉大辞典》

No, we don't catch his drift at all! What are they up to? More detailed drifts, please!

我们没有明白，他们到底结果如何？更多的细节，拜托！

youdao

Some people are always coming up to perfect strangers and asking them what they do.

有些人总是走近完全不认识的人跟前，问人家是干什么的。

《柯林斯英汉双解大词典》

What they are hoping to do is to come up with a coordinated plan to ease the recession, get their economies back on track and put in place regulatory measures to try to prevent similar crises in future.

VOA: standard.2009.04.02

I'm going to tell you a little bit about how they are set up and what they are.

我会介绍一下课程安排,和内容。

哈佛公开课 - 幸福课课程节选

I need a contract that says, here's what I want in terms of things that you're going to take as input, to begin your part of the drama, here's what you're going to produce at the output, and the details of what they do inside are up to them.

这些作家相互沟通进行工作呢？,我需要一封规格说明书,我需要一份合约，上面列出了我想要你做的事，这些是你要再开始时做的输入,这些是你要的输出,细节工作就取决于它们了。

麻省理工公开课 - 计算机科学及编程导论课程节选

What exactly are they up to?

NPR: Bailing out Bear Stearns

"We are talking about how we know things and how we keep track of things -- and that information could help people take steps to avoid us knowing what they are up to, " said one official.

CNN: US - Weapon information, spy techniques on missing U.S. State Department computer

Historically, we know what encourages convicts to rehabilitate: they must be young, non-violent, dispersed into small communities that know what they are up to, compelled to work, remunerated and punished if they abscond or reoffend.

ECONOMIST: America behind bars