"Obviously missile launches of that nature are unhelpful and potentially destabilizing, and are frowned upon by us and others in the region,".

VOA: standard.2009.10.18

I knew you in this dark: for so you frowned Yesterday through me as you jabbed and killed.

在黑暗中我认出了你,刺戮屠杀我的时候，你和昨天一样皱着眉。

耶鲁公开课 - 现代诗歌课程节选

It's definitely frowned upon.

这会让人不舒服。

一定要给小费 - SpeakingMax英语口语达人

Aliou Sow,12,frowned and said he wished farmers understood the damage many are doing.

VOA: standard.2010.04.01