4 sentences

1. 罗马不是一天建成的。

   Luó​mǎ bù shì yī tiān jiàn​chéng de.

   Rome wasn't built in a day.

   Source: Tatoeba

2. 这座大桥预计将于明年年底建成。

   zhè zuò dà​qiáo yù​jì jiāng yú míng​nián nián​dǐ jiàn​chéng.

   The bridge is expected to be completed by the end of next year.

   Source: Dong Chinese Dictionary

3. 由于大桥还没建成，两岸居民只能靠渡船过渡。

   yóu​yú dà​qiáo hái méi jiàn​chéng, liǎng àn jū​mín zhǐ néng kào dù​chuán guò​dù.

   Since the bridge hasn't been built yet, residents on both sides have to rely on ferries to cross.

   Source: Dong Chinese Dictionary

4. 该地区已经建成了一个完善的医疗网络。

   gāi dì​qū yǐ​jīng jiàn​chéng le yī gè wán​shàn de yī​liáo wǎng​luò.

   A comprehensive medical network has been established in the region.

   Source: Dong Chinese Dictionary