2 sentences

1. 他回回都考第一名。

   tā huí​huí dōu kǎo dì​yī míng.

   He comes in first place every single time.

   Source: Dong Chinese Dictionary

2. 他在读古典文学作品时，经常看到“回回”这个词。

   tā zài dú gǔ​diǎn wén​xué zuò​pǐn shí, jīng​cháng kàn​dào“ Huí​hui” zhè​ge cí.

   When reading classical literature, he often comes across the term 'Huihui'.

   Source: Dong Chinese Dictionary