2 sentences for 感染力 (gǎn​rǎn​lì — appeal)

1. 这首歌的词和曲都很有感染力。

   zhè shǒu gē de cí hé qǔ dōu hěn yǒu gǎn​rǎn​lì.

   Both the lyrics and the melody of this song are very infectious.

   Source: Dong Chinese Dictionary

2. 她的歌声富有感染力，深深打动了在场的每一个人。

   tā de gē​shēng fù​yǒu gǎn​rǎn​lì, shēn​shēn dǎ​dòng le zài​chǎng de měi yī gè rén.

   Her singing is very infectious and deeply touched everyone present.

   Source: Dong Chinese Dictionary