当你借出某物时，假装你是在赠送。如果它被归还，你会感到惊喜和快乐。

Success comes from creating value for others and making a positive impact on the world.

Technological leadership is the foundation of petrochemical enterprises, and we must continuously increase R&D investment.

教师必须既是学生的研究者，也是学科的研究者。