Suppose you'd been able to talk before hand, so suppose the woman here whose name was? Mary.
假设你们交上来之前约好了,比如这位女士,叫什么来着,玛丽
All right, the problem sets: there will be roughly ten problem sets and I'll talk about them more later on when I hand them out.
关于课堂作业,我应该会安排十次左右的课堂作业,在留作业的时候我再细说
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