学生和交换学者要交纳费用以提供系统开支。
Students and exchange visitors are charged fees to help pay for the system.
他是一名交换学者。来吧，让我把你介绍给他认识。下午好，李良。
He's an exchange scholar. Come on, let me introduce you to him. Good afternoon, Li Liang.
他是一名交换学者。来吧，让我把你介绍给他认识。下午好，李良。
He's an exchange scholar. Come on, let me introduce you to him. Good afternoon, Li Liang.
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