5 sentences

1. 孩子们在空地上比赛转陀螺。

   hái​zi​men zài kòng​dì shàng bǐ​sài zhuàn tuó​luó.

   The children are competing in spinning tops in the open area.

   Source: Dong Chinese Dictionary

2. 孩子们在屋后的空地上玩耍。

   hái​zi men zài wū hòu de kòng​dì shàng wán​shuǎ.

   The children are playing in the open space behind the house.

   Source: Dong Chinese Dictionary

3. 他在院子里辟出一小块空地种花。

   tā zài yuàn​zi lǐ pì chū yī xiǎo kuài kòng​dì zhòng huā.

   He cleared a small plot of land in the yard to plant flowers.

   Source: Dong Chinese Dictionary

4. 他在空地上摆了一排铁圈子，让孩子们跳着玩。

   tā zài kòng​dì shàng bǎi le yī pái tiě quān​zi, ràng hái​zi men tiào zhe wán.

   He set up a row of iron hoops in the clearing for the children to jump through and play.

   Source: Dong Chinese Dictionary

5. 这种空地导弹的精度非常高。

   zhè zhǒng kōng​dì dǎo​dàn de jīng​dù fēi​cháng gāo.

   The precision of this air-to-surface missile is very high.

   Source: Dong Chinese Dictionary