look down on (someone/something)
to consider someone or something as not important or of value.
“A lot of people look down on us because we're homeless,” she says.
英语词组固定搭配大全包含18674条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。