Let's say you have four questions, you have 50 minutes, take out five minutes to read the paper, so that's 45 minutes.

你有四个问题，你有50分钟，花5分钟阅读考试，剩下45分钟。

麻省理工公开课 - 固态化学导论课程节选

Let's say you have four questions, you have 50 minutes, take out five minutes to read the paper, so that's 45 minutes.

你有四个问题，你有50分钟，花5分钟阅读考试，剩下45分钟。

麻省理工公开课 - 固态化学导论课程节选