他tā代dài表biǎo公gōng司sī参cān加jiā了liǎo会huì议yì。

He represented the company at the meeting.

这zhè个ge颜yán色sè代dài表biǎo什shén么me？

What does this color represent?

她tā是shì我wǒ们men班bān的de代dài表biǎo。

She is the representative of our class.

她tā代dài表biǎo学xué校xiào来lái这zhè里lǐ。

She is here on behalf of the school.

红hóng色sè代dài表biǎo热rè情qíng。

Red represents passion.