3 sentences

1. 经过多轮海选，他最终进入了决赛。

   jīng​guò duō lún hǎi​xuǎn, tā zuì​zhōng jìn​rù le jué​sài.

   After several rounds of auditions, he finally made it to the finals.

   Source: Dong Chinese Dictionary

2. 该村通过海选选出了新一届村委会成员。

   gāi cūn tōng​guò hǎi​xuǎn xuǎn​chū le xīn yī jiè cūn​wěi​huì chéng​yuán.

   The village elected its new committee members through a direct election.

   Source: Dong Chinese Dictionary

3. 这部电影正在全国范围内进行演员海选。

   zhè bù diàn​yǐng zhèng​zài quán​guó fàn​wéi nèi jìn​xíng yǎn​yuán hǎi​xuǎn.

   The movie is holding nationwide open auditions for actors.

   Source: Dong Chinese Dictionary