又脏又乱dirty and messy

• 那里环境脏乱，卫生极差。

  That place is dirty and messy. It is very unhygienic.

• 黄玉奎面对的是个令人头痛的乱摊子：泥泞的道路脏乱不堪。

  Huang Yukui is facing a headache of a problem: the mud road is unbelievably filthy.

• 家虽小却不脏乱，东西摆放得井井有条。

  Although the house is small, it is not dirty or messy: everything is arranged neatly.