It's exchanging a part of yourself with someone else.
这是你与他人交流学习的机会。
2
The best part of university life is exchanging ideas with other students.
大学生活中最有意义的事是与其他的同学交流思想。
3
The Securities and Exchange Commission (SEC) has now charged 22 people for illegally exchanging inside information as part of the Galleon Group hedge-fund case.