她不屑一顾地拒绝了邀请，认为这配不上她。

She ___turned ___her ___nose ___up ___at the invitation, thinking it was beneath her.

他从不因人们的背景而看不起他们。

He never ___turns ___his ___nose ___up ___at people based on their background.

不要看不起简单的食物；它可以很有营养。

Don't ___turn ___your ___nose ___up ___at simple food; it can be very nutritious.