cover up例句

He suspects there's a conspiracy to cover up the crime.
他怀疑有人密谋掩盖犯罪事实。

His behaviour is an attempt to cover up his insecurities.
他的行为是想掩饰自己的不自信。

The police investigation was a joke. A total cover-up.
警方的调查简直荒唐可笑，完全是在掩盖真相。