foul (something) up
phrasal verb with foul verb uk/faʊl/ us/faʊl/
informal
搞砸，搞糟
to spoil something by making a mistake or doing something stupid
I don't want David organizing this party after the way he fouled things up last year. 去年戴维把聚会搞砸了，今年的聚会我不想让他组织。