A couple of announcements, the obvious, the first test is Wednesday.

有以下一系列通知，最主要的是，星期三回迎来第一场考试。

麻省理工公开课 - 固态化学导论课程节选

First thing, I will begin with comments about the test.

第一件事，我将以考试的评论开始。

麻省理工公开课 - 固态化学导论课程节选

And they completely change once your first paper is due or the midterms arrive.

要写第一篇论文，时，情况彻底改变,或期中考试来临时。

哈佛公开课 - 幸福课课程节选