We can't afford to slip up.

我们疏忽不得。

《牛津词典》

I tried to slip up the stairs unnoticed.

我试图神不知鬼不觉地溜上楼梯。

《柯林斯英汉双解大词典》

When it comes to tackling a job, you're almost guaranteed to slip up once in a while.

当在完成一份工作的时候，忽然跌倒一次是必经的历程。

youdao

This is the place where people typically slip up in debugging. They don't think in advance what they expect the result to be.

实验就推翻了你的假设了,人们在做调试的时候往往忽略了这一点,他们做实验之前并没有想想。

麻省理工公开课 - 计算机科学及编程导论课程节选

Aston Villa go to West Ham waiting to pounce if Everton were to slip up.

BBC: Premier League prepares for D-Day

"Once we've turned that corner, we can move on from there and wait for other teams to slip up, which they will do, " he said.

BBC: Chelsea squad weaker than previous seasons - John Terry

Some officials admit to a slip-up over this year's budget target, which Mr Rajoy wanted to be 5.8% of GDP whereas Brussels insisted on 5.3%.

ECONOMIST: Spain and the euro