phrase (alsodo's and don'ts) rules about actions and activities that people should or should not perform or take part in: 规定，规则;规矩 The teacher spent ten minutes explaining all the dos and don'ts in the classroom.老师花了十分钟解释课堂纪律。 Before you start using the system, here are a few do's and don'ts. She sent me an article called "The Do's and Don'ts for Resume Writing." There were a lot more dos and don'ts when I was younger. The visitors were briefed about the production facility and about the do's and don'ts once inside the facility. See also
dos
dos and don’ts | American Dictionary
dos and don’ts
idiom rules about how people should and should not behave: Where I work, the old dos and don’ts about how to dress don’t really matter.