Mistakes must not be covered up. They must be exposed before you can correct them.

错误不应加以掩饰，而必须加以揭露，才能加以改正。

youdao

Mistakes must not be covered up. They must be exposed before you can correct them.

错误不应加以掩饰，而必须加以揭露，才能加以改正。

youdao