3 sentences

1. 几个醉汉在街头斗殴。

   jǐ gè zuì​hàn zài jiē​tóu dòu'ōu.

   Several drunks were brawling on the street.

   Source: Dong Chinese Dictionary

2. 警察及时赶到，阻止了一场斗殴。

   jǐng​chá jí​shí gǎn​dào, zǔ​zhǐ le yī cháng dòu'ōu.

   The police arrived in time to stop a brawl.

   Source: Dong Chinese Dictionary

3. 持械斗殴是严重的违法行为，会受到法律的制裁。

   chí​xiè dòu'ōu shì yán​zhòng de wéi​fǎ xíng​wéi, huì shòu​dào fǎ​lǜ de zhì​cái.

   Brawling with weapons is a serious illegal act that is subject to legal sanctions.

   Source: Dong Chinese Dictionary