如何翻译“不三不四”

■她勾搭上一些不三不四的人。

She’s picked up with some peculiar people.

■老张的家里总来些不三不四的人，可想而知老张不是什么好东西。

There are always riff-raffs hanging around in Lao Zhang’s home, which gives you the feeling that Lao Zhang is not a good guy.

■报上那些不三不四的文章使她对他抱有偏见。

Newspaper gossip had prejudiced her against him.