3 sentences

1. 世界上最难的运动是奥林匹克举重。

   shì​jiè shàng zuì nán de yùn​dòng shì ào​lín​pǐ​kè jǔ​zhòng.

   The most difficult sport in the world is Olympic weightlifting.

   Source: OpenSubtitles

2. 奥林匹克精神激励着全世界的运动员。

   ào​lín​pǐ​kè jīng​shén jī​lì zhe quán shì​jiè de yùn​dòng​yuán.

   The Olympic spirit inspires athletes all over the world.

   Source: Dong Chinese Dictionary

3. 北京曾于2008年成功主办了夏季奥林匹克运动会。

   Běi​jīng céng yú2008 nián chéng​gōng zhǔ​bàn le xià​jì ào​lín​pǐ​kè yùn​dòng​huì.

   Beijing successfully hosted the Summer Olympic Games in 2008.

   Source: Dong Chinese Dictionary