He is the most impudent fellow in nature.
他是世界上最厚颜无耻的家伙。
I remember. there was an impudent mountebank who sold pills which(as he told the country people)were very good against an earthquake(Joseph Addison.
我记得…有一个厚颜无耻的商人来推销能(据他对村民们所说的)对付地震极为有效的药片(约瑟夫·艾迪生)。
The impudent boy made faces at the teacher.
放肆的孩子居然给老师脸色看。