3 sentences

1. 他们正在舞池里跳华尔兹。

   tā​men zhèng​zài wǔ​chí lǐ tiào huá'ěr​zī.

   They are dancing the waltz on the dance floor.

   Source: Dong Chinese Dictionary

2. 音乐响起，人们纷纷涌向舞池。

   yīn​yuè xiǎng​qǐ, rén​men fēn​fēn yǒng xiàng wǔ​chí.

   As the music started, people swarmed onto the dance floor.

   Source: Dong Chinese Dictionary

3. 他们在舞池里跳了一支优雅的探戈。

   tā​men zài wǔ​chí lǐ tiào le yī zhī yōu​yǎ de tàn​gē.

   They danced an elegant tango on the dance floor.

   Source: Dong Chinese Dictionary