一决胜负

wǒ yào hé nǐ zhēng lùn yī jué shèng fù

我要和你争论，一决胜负。

I'll break a lance with you in argument.

liǎng zhī duì wu jiāng zài bǐ sài zhōng yī jué shèng fù

两支队伍将在比赛中一决胜负。

The two teams will fight it out in the match.