2 sentences

1. 工人们正在修补大桥的桥墩。

   gōng​rén men zhèng​zài xiū​bǔ dà​qiáo de qiáo dūn.

   Workers are repairing the bridge piers.

   Source: Dong Chinese Dictionary

2. 工人们正在修补受损的路面。

   gōng​rén men zhèng​zài xiū​bǔ shòu​sǔn de lù​miàn.

   Workers are repairing the damaged road surface.

   Source: Dong Chinese Dictionary