to spend time being lazy and doing very little

I wish you'd stop bumming around and start looking for a job. 希望你不要再瞎混了，赶紧去找份工作。

to travel around in different places or in a particular area, with no plans, no job, and little money

After college she spent a year bumming around Europe. 大学毕业后，她用了一年时间在欧洲四处旅游。