1 sentence

1. 这些基础课程是为以后的专业学习垫底。

   zhè​xiē jī​chǔ kè​chéng shì wèi yǐ​hòu de zhuān​yè xué​xí diàn​dǐ.

   These basic courses lay the foundation for future specialized studies.

   Source: Dong Chinese Dictionary