【你终于发现了 + 我跟不上你们的节奏】怎么说？

我老听到 you finally find it + I can't catch up with you guys。错的中式英语！

"Found out" + "Keep up"。

You found out 你发现了

You just found out? 你现在才发现？

I can't keep up with you （听不懂/不知道你们在说什么）