3 sentences

1. 他在墙上抹了一层石灰。

   tā zài qiáng shàng mò le yī céng shí​huī.

   He smeared a layer of lime on the wall.

   Source: Dong Chinese Dictionary

2. 他在用石灰把砖缝溜平。

   tā zài yòng shí​huī bǎ zhuān​fèng liù píng.

   He is using lime to smooth over the joints between the bricks.

   Source: Dong Chinese Dictionary

3. 建筑工人正在用石灰粉刷墙壁。

   jiàn​zhù gōng​rén zhèng​zài yòng shí​huī fěn​shuā qiáng​bì.

   Construction workers are whitewashing the walls with lime.

   Source: Dong Chinese Dictionary