泾水清,渭水浊。用以比喻事物和人品的差别。
沈砺《咏史》;“渭浊泾清本异流,当涂符谶趁时收。”
渭浊泾清作宾语、定语;用于比喻句。
The difference is as distinct as that between night and day.
泾渭分明