He suspects there's a conspiracy to cover up the crime.

他怀疑有掩盖这桩罪行的阴谋。

《柯林斯英汉双解大词典》

Sometimes original art works appear questionable or inauthentic because they've had so many restorers add touch-up layers to cover up damage, damage from the paint having deteriorated over time.

有时候艺术品真迹看起来是赝品，是因为很多修护人员添加了很多层保护膜，以覆盖油画上的损伤；而随着时间的推移，画作上损坏的地方已经恶化了。

youdao

She laughed to cover up her feeling of awkwardness.

她用笑声掩饰她的难堪。

《牛津词典》

However,Republicans and Democratic opponents said the resolution itself was biased, asserting that by passing it the House would be demonstrating it wants to cover up the truth about actions in Gaza by both Hamas and Israel.

VOA: standard.2009.11.04

It's not as though someday you're going to open up an issue of National Geographic where the cover story's going to be "At long last, explorers have discovered the number two."

你不会在某一天,打开一本国家地理时,发现上面会印着这样的封面故事,探险家们终于发现了数字2

耶鲁公开课 - 死亡课程节选

I'm going to go there initially, so I can move this over here, so I can get the base part of that over there, I want to put that one there before I put this over here, finally I get to the point where I can move the bottom one over now I've got to be really careful to make sure that I don't cover up the bottom one in the wrong way before I get to the stage where I wish they were posts and there you go.

我要先把其他的放到多余的柱子上，然后把最底下的放到目标柱子上，我要在把除了最底下的圆盘，其他的圆盘挪过来之前,把最下面的圆盘放在这儿,因此我得出了最下面的盘子,应该如何摆放的结论,当我没得到其他盘子的正确摆放位置的时候,要很小心的确认没把错误的盘子,放在最下面的盘子上面。

麻省理工公开课 - 计算机科学及编程导论课程节选

The town's authorities tried to cover up the news, but people began posting accounts online.

ECONOMIST: China before the Olympics

The SEC then tried to cover up its reasons for firing him, he claims.

FORBES: Legal Issues

Advisers tend to cover up their lack of baking skills with an abundance of decorating.

FORBES: Investing Well Is Like Baking An Award-Winning Cake