他公然违反了校规。

Tā gōngrán wéifǎnle xiào guī.

He openly violated the school rules.

不要公然挑战法律底线。

Bùyào gōngrán tiǎozhàn fǎlǜ dǐxiàn.

Do not openly challenge the bottom line of the law.

他公然对上司说不。

Tā gōngrán duì shàngsī shuō bù.

He openly said no to his boss.