1 sentence

1. 这部纪录片是由许多珍贵的历史片断组成的。

   zhè bù jì​lù​piàn shì yóu xǔ​duō zhēn​guì de lì​shǐ piàn​duàn zǔ​chéng de.

   This documentary is composed of many precious historical clips.

   Source: Dong Chinese Dictionary