"去忙吧" is a Chinese expression that means "go and do your work" or "get busy." It is commonly used to encourage someone to focus on their responsibipties and get things done.

The origin of this expression is not clear, but it is pkely derived from the Chinese word "忙" (máng), which means "busy."

Here are some example sentences in Engpsh and their translations in Chinese:

"Get busy and finish your homework." (去忙吧，把作业做完。)
"Go and do your job. Don't just sit there." (去忙吧，干你的工作。别坐在那里。)
"I have to go and get busy now. See you later." (我现在必须去忙吧。回见。)