3 sentences

1. 他在那片荒山上拓出了几亩新田。

   tā zài nà piàn huāng​shān shàng tuò chū le jǐ mǔ xīn tián.

   He reclaimed several acres of new fields on that barren hill.

   Source: Dong Chinese Dictionary

2. 政府计划在未来五年内绿化这片荒山。

   zhèng​fǔ jì​huà zài wèi​lái wǔ nián nèi lǜ​huà zhè piàn huāng​shān.

   The government plans to afforest these barren hills within the next five years.

   Source: Dong Chinese Dictionary

3. 经过多年的努力，昔日的荒山已经变成了果园。

   jīng​guò duō nián de nǔ​lì, xī​rì de huāng​shān yǐ​jīng biàn​chéng le guǒ​yuán.

   After years of hard work, the once barren mountain has been turned into an orchard.

   Source: Dong Chinese Dictionary