We interpret a frown as a sign of disapproval. 我们把皱眉当作不赞成的表示。
I frown upon smoking in public restaurants. 我不赞成在公共餐厅中抽烟。
She began to see that they looked upon her complaint as unwarranted, and that she was supposed to work on and say nothing. 她看出他们对她的抱怨不以为然,他们只希望她不出怨言地继续干下去。