这里是商业区。

Zhèlǐ shì shāngyèqū.

This is the business district.

这是一家很成功的商业公司。

Zhè shì yī jiā hěn chéng gōng de shāng yè gōng sī.

This is a very successful business company.

学习商业知识对未来有帮助。

Xué xí shāng yè zhī shi duì wèi lái yǒu bāng zhù.

Learning business knowledge is helpful for the future.