Her work is full of silly mistakes.

她满篇都是愚蠢的错误。

《牛津词典》

Silly mistakes and queer clothes often arouse ridicule.

荒谬的错误和古怪的服装常引起讪笑。

youdao

He's a good developer;" not "He makes a lot of silly mistakes.

而不是“他犯了大量愚蠢的错误（bug）。

youdao

That'll catch a lot of just silly mistakes for you if you go back and see it and you don't have all of that.

这可以让你抓到很多低级错误,如果你回去发现它们不一样的话。

麻省理工公开课 - 化学原理课程节选

"These were just two silly mistakes, " said Capello, who has a 100% record with England in competitive games.

BBC: Capello unfazed by England errors

They also have a lot of information about the idiomatic differences between the languages, to stop them making silly mistakes.

ECONOMIST: A gift of tongues

There will not be any hiccups, mistakes or silly questions asking the user to repeat the search query.

FORBES: The Future of Computers: Voice Recognition