他用闲着的那只手摸我的夹克。He pawed at my jacket with his free hand.别的孩子都忙着,你不要闲着袖手旁观.Don't just sit by while the other children are all busy.他失业后一直在这里闲着.Since he lost his job, he's been hanging around here....

“闲着”的英语可以翻译为：at a loose end，be at grass ...