She flubbed the first line of the song.
她把第一行歌词唱错了。
牛津词典
EXAMPLE : If I don't check the data carefully, I could flub the whole project.
如果不仔细检查数据, 我可能弄毁整个工程.
期刊摘选
The Cast Aluminium Wheel flub is a part of the wheel. It must n't leak.
铸铝轮毂是汽车轮的一部分, 不能漏气.
期刊摘选
"I botched the dinner and we had to eat out"
"the pianist screwed up the difficult passage in the second movement"