For a long time, people drew a clear line between good and evil - the good guys were perfect, while the evil guys were all nasty.

长久以来，人们把好与坏分的泾渭分明——好人完美无缺；坏人一无是处。

youdao

I think one of the most important meanings is that it drew a clear line between the waiter who "provides service" and the guests who are "served" by the waiter.

而我认为其中最重要的，是他将“提供服务”的服务人员与“被服务”的客人划出了分明的界限。客人是坐着享受服务的角色，而服务员则是站着侍候在两边的。

youdao

I think one of the most important meanings is that it drew a clear line between the waiter who "provides service" and the guests who are "served" by the waiter.

而我认为其中最重要的，是他将“提供服务”的服务人员与“被服务”的客人划出了分明的界限。客人是坐着享受服务的角色，而服务员则是站着侍候在两边的。

youdao