An old man is a nasty thing.

老人邋里邋遢。

Scarlett: You low-down, cowardly, nasty thing, you!

你是个卑鄙的家伙，胆小鬼，下流胚，你！

Scarlett : You low-down, cowardly, nasty thing, you!

你是个卑鄙的家伙，胆小鬼，下流胚，你！

A used broom is kind of a nasty thing to box up with the linens.

用过的扫帚很脏，没法跟亚麻制品放一起啊。