I can do that no sweat.我可以很轻松地做那事。

“Can you move that big board for me?” “Sure, no sweat.”“你能帮我把那块大木板移开吗？”“行，没问题。”

“Thanks a lot for your help.” “No sweat.” [=helping was not difficult and I was glad to do it]“谢谢你帮忙。”“小事一桩。”