3 sentences

1. 建设全面小康社会是国家近年的发展目标。

   jiàn​shè quán​miàn xiǎo​kāng shè​huì shì guó​jiā jìn​nián de fā​zhǎn mù​biāo.

   Building a moderately prosperous society in all respects is a national development goal of recent years.

   Source: Dong Chinese Dictionary

2. 实现小康社会是许多古代思想家的毕生追求。

   shí​xiàn Xiǎo​kāng shè​huì shì xǔ​duō gǔ​dài sī​xiǎng​jiā de bì​shēng zhuī​qiú.

   Achieving a moderately prosperous society was the lifelong pursuit of many ancient thinkers.

   Source: Dong Chinese Dictionary

3. 经过几年的努力，他们家终于过上了小康生活。

   jīng​guò jǐ nián de nǔ​lì, tā​men jiā zhōng​yú guò​shàng le xiǎo​kāng shēng​huó.

   After years of hard work, their family is finally living a comfortable middle-class life.

   Source: Dong Chinese Dictionary