2 sentences

1. 这部纪录片的旁白由一位专业配音员朗读。

   zhè bù jì​lù​piàn de páng​bái yóu yī wèi zhuān​yè pèi​yīn​yuán lǎng​dú.

   The narration of this documentary is read by a professional voice actor.

   Source: Dong Chinese Dictionary

2. 演员面向观众说了一段旁白，揭示了他的内心想法。

   yǎn​yuán miàn​xiàng guān​zhòng shuō le yī duàn páng​bái, jiē​shì le tā de nèi​xīn xiǎng​fǎ.

   The actor delivered an aside to the audience, revealing his inner thoughts.

   Source: Dong Chinese Dictionary