You look a mess.是什么意思？

You look a mess.

你外表太邋遢了。

you

pron. 你，你们，您们，各位，大家；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

look

vt.& vi. 看，瞧；vi. 注意，面向，寻找，看起来好像；n. 看，（尤指吸引人的）相貌，眼神，样子；int. （插话或唤起注意）喂，听我说；

例句
The same abstracted look was still on his face.
他仍是一脸恍惚。

mess

n. 混乱，食堂，肮脏，困境；vt. 弄脏，搞砸，给…供膳；vi. 把事情弄糟，制造脏乱；

例句
She used to mess up the floor and I had to clean up after her.
她过去常常把地板弄得很脏乱，而我不得不为她清理干净。