2 sentences

1. 一朵白云在蓝天上飘。

   yī duǒ bái​yún zài lán tiān​shàng piāo.

   A white cloud is floating in the blue sky.

   Source: Tatoeba

2. 我小时候常常躺在草地上看天上的白云。

   wǒ xiǎo​shí​hou cháng​cháng tǎng zài cǎo​dì shang kàn tiān​shàng de bái​yún.

   When I was little, I often lay on the grass and watched the white clouds in the sky.

   Source: Tatoeba