2 sentences

1. 几个顽皮的孩子把家里闹得天翻地覆。

   jǐ gè wán​pí de hái​zi bǎ jiā lǐ nào de tiān​fān​dì​fù.

   A few naughty children turned the house upside down.

   Source: Dong Chinese Dictionary

2. 改革开放四十年来，中国的面貌发生了天翻地覆的变化。

   gǎi​gé​kāi​fàng sì​shí nián lái, Zhōng​guó de miàn​mào fā​shēng le tiān​fān​dì​fù de biàn​huà.

   Over the past forty years of reform and opening up, China has undergone earth-shaking changes.

   Source: Dong Chinese Dictionary