adj.肮脏的;下流的,令人讨厌的;恶劣的,艰险的;严重的;凶相的;
例句:
Now the weather is fine, then nasty.
天气一会儿好, 一会儿坏.
You can get a nasty sting from a jellyfish.
你可能会被水母狠狠地蜇一下.
He had a temper and could be nasty.
他脾气不大好,有时凶得很。