Didn't even need the trashy tee to figure that one out.你不穿破t恤，也能看出你从哪个林子来的

figure out算出；想出；解决；理解；断定

I can't figure out why he quit his job.

我琢磨不透他为什么要辞掉工作。

I can't figure out why he is absent.

我弄不明白他为什么缺席。

Can I stay with you tonight?今晚我能和你待一起吗

stay with 与 ... 留在一起

The whole clan is coming to stay with them at Christmas.

他们那一大帮亲戚要在圣诞节期间来他们这里住。

If you ever visit London, you must come and stay with us.

你要是到伦敦来，一定要到我们这里住住。

Everyone has things in their past they don't want people to know about.每个人都有不想让别人知晓的过去

know about知道； 了解； 听说过有关 ... 的情况

Yes, I do know about the accident.

是的，我的确知道这次事故。

I'd love to know about the plan.

我想知道这个计划。