look down on
US /lʊk daʊn ɑn/
UK /lʊk daʊn ɑn/

1.
看不起, 轻视
to consider someone or something as inferior, or to have a low opinion of them
:
•
She tends to look down on people who haven't been to college.
她倾向于看不起那些没上过大学的人。
•
Don't look down on him just because he's from a small town.
不要仅仅因为他来自一个小镇就看不起他。