muck up

1．make dirty弄脏

He fell down and came home with his clothes all mucked up．他摔了一跤，回家时衣服都弄脏了。

Clean your shoes on the mat，or you'll muck up the floor．把鞋子在垫上擦干净，否则你会把地板弄脏的。

2．spoil；make a mess of搞糟

The hairdresser has really mucked my hair up this time．He's cut it much too short．理发师这次真把我头发弄坏了，他剪得太短了。

They have mucked my plan up completely．他们把我的计划全搞乱了。