A couple of announcements before we get started: tomorrow there will be a 10 minute quiz in recitation based upon the content of homework one.

在我们开始之前有几点声明：,明天会有一个10分钟的小测验,详细叙述课后作业内容。

麻省理工公开课 - 固态化学导论课程节选

This is discussed in detail in the textbook Don't panic if you don't get it quite now.

这在教材中已有详细的叙述,如果一下子理解不了也不用担心。

耶鲁公开课 - 心理学导论课程节选