Subject + 打败 + Object
打败 (dǎbài) is a resultative verb compound meaning "to defeat," formed by 打 (to hit/fight) and the result complement 败 (to lose/fail). It is used to describe overcoming an opponent in battle, competition, or conflict. In the passive voice, 被打败 means "was defeated."
我们的球队三比零打败了对手。
Wǒmen de qiúduì sān bǐ líng dǎbàile duìshǒu.
Our team defeated the opponent three to zero.
他在比赛中打败了去年的冠军。
Tā zài bǐsài zhōng dǎbàile qùnián de guànjūn.
He defeated last year's champion in the competition.
这支军队从来没有被打败过。
Zhè zhī jūnduì cónglái méiyǒu bèi dǎbài guò.
This army has never been defeated.