1 sentence

1. 许多历史学家致力于研究文革的历史背景。

   xǔ​duō lì​shǐ​xué​jiā zhì​lì yú yán​jiū Wén​gé de lì​shǐ bèi​jǐng.

   Many historians are dedicated to studying the historical background of the Cultural Revolution.

   Source: Dong Chinese Dictionary