你可以穿牛仔裤，但我认为这家餐厅不赞成穿短裤和运动鞋。

You can wear jeans, but I think the restaurant ___frowns ___on shorts and sneakers.

禅意花园中常不赞成交谈，因此保持宁静。

Talking is often ___frowned ___upon in Zen gardens, so it remains peaceful.

许多公司不赞成员工在工作时间使用社交媒体。

Many companies ___frown ___on employees using social media during work hours.