3 sentences

1. 语言是文化的重要载体。

   yǔ​yán shì wén​huà de zhòng​yào zài​tǐ.

   Language is an important vehicle for culture.

   Source: Dong Chinese Dictionary

2. 文字和语都是人类文明传承的重要载体。

   wén​zì hé yǔ dōu shì rén​lèi wén​míng chuán​chéng de zhòng​yào zài​tǐ.

   Both writing and language are important carriers for the transmission of human civilization.

   Source: Dong Chinese Dictionary

3. 蚊子是传播这种病毒的载体。

   wén​zi shì chuán​bō zhè zhǒng bìng​dú de zài​tǐ.

   Mosquitoes are the carriers of this virus.

   Source: Dong Chinese Dictionary