Or you'll screw it up.

否则你会搞砸的。

youdao

My first American award and [Nick] had to screw it up!

我的第一个美国的奖被Nick搞砸了。

youdao

I've carefully mapped this out, so don't screw it up.

我已经仔细计划好了，千万别弄砸了。

youdao

If you screw it up we don't count it as much as if you do well.

你要是期中考砸了就给你在总评里降低期中比例

耶鲁公开课 - 1871年后的法国课程节选

It takes time and I'm probably going to screw up.

它很费时间而且我也许会算错

耶鲁公开课 - 基础物理课程节选

Bad businesspeople with the greatest idea on the planet will screw it up.

FORBES: Why Math Matters

Per the agreement and our promise not to screw it up, Tumblr will be independently operated as a separate business.

FORBES: Promising 'Not To Screw It Up', Yahoo! Acquires Tumblr For $1.1 Billlion

And it is so ingrained in the DNA of APPL that only a deliberate deviation from that idea can screw it up.

FORBES: Steve Jobs Lives