foul up
[phrasal verb] informal 1
foul (something) up : to ruin or spoil (something)毁掉;破坏 : to ruin or spoil (something) by making a mistake or being careless(因犯错或粗心)把…弄糟 2
: to make mistakes : to fail at something because you have made a mistake or been careless大量出错;(因出错或粗心而)搞砸 — see also foul-up