正大光明

méi huà shuō wǒ men shì bèi zhèng dà guāng míng de dǎ bài de

没话说，我们是被正大光明地打败的。

There are no excuses. We were beaten fair and square.

tā cān yù zhè jiàn shì wán quán shì zhèng dà guāng míng de

他参与这件事完全是正大光明的。

His part in the affair was quite open and aboveboard.

tā men suǒ gàn de dōu shì zhèng dà guāng míng de shì

他们所干的都是正大光明的事。

All the things they do are aboveboard.