2 sentences

1. 主力球员因伤不得不提前退场治疗。

   zhǔ​lì qiú​yuán yīn shāng bù​dé​bù tí​qián tuì​chǎng zhì​liáo.

   The key player had to leave the field early for medical treatment due to an injury.

   Source: Dong Chinese Dictionary

2. 演出还没结束，已经有部分观众提前退场了。

   yǎn​chū hái méi jié​shù, yǐ​jīng yǒu bù​fen guān​zhòng tí​qián tuì​chǎng le.

   The show isn't over yet, but some of the audience has already left.

   Source: Dong Chinese Dictionary