3 sentences

1. 他点燃了一把火，试图驱散寒冷。

   tā diǎn​rán le yī bǎ huǒ, shì​tú qū​sàn hán​lěng.

   He lit a fire, trying to ward off the cold.

   Source: Dong Chinese Dictionary

2. 他的诚恳解释驱散了大家心中的疑虑。

   tā de chéng​kěn jiě​shì qū​sàn le dà​jiā xīn zhōng de yí​lǜ.

   His sincere explanation dispelled everyone's doubts.

   Source: Dong Chinese Dictionary

3. 警察用催泪瓦斯驱散了抗议的人群。

   jǐng​chá yòng cuī​lèi wǎ​sī qū​sàn le kàng​yì de rén​qún.

   Police used tear gas to disperse the crowd of protesters.

   Source: Dong Chinese Dictionary