Before a storm, sailors cover the hatches with waterproof material.

VOA: special.2009.05.24

Point I want to make about this, though, is that we are going to cover a lot of material that is not in the assigned readings, and we do have assigned readings associated with each one of these lectures.

要说的一点是,我们会有很多,不在拓展阅读里面的材料，而且还有涉及到,每节课内容的拓展阅读。

麻省理工公开课 - 计算机科学及编程导论课程节选

So this really rips the material that I'd like to cover in this brief conversation with you.

这就是,我在和你们这段简短的,交谈中想要含盖的内容。

麻省理工公开课 - 媒体、教育、市场课程节选

Do we offer what we dub packer editions of problem sets which extensively cover the same material but with a more technical sophistication, with more detail, and these are simply options that students in this course can elect as per the syllabus.

我们提供涵盖同样内容,但具有更多技术性细节的,我们称之为习题包，其中有更详细的信息,这些只是按照教学大纲的要求让同学们可以自主选择。

哈佛公开课 - 计算机科学课程节选

So if I post it on Wednesday to cover the material for that week, then you should attempt it as quickly as possible because I'm going to assume you have done the problems when you come for the next few lectures.

如果我周三布置了关于该周课堂内容的作业,你们应该尽快着手去做,因为当你下周来上新课时,我会假设大家都已经把上周题目做完了

耶鲁公开课 - 基础物理课程节选

You can go to any one of these times more comfortable, less comfortable, somewhere in between, and the focus of these sections will be on the material cover this week as well as potentially the start of next week and with a focus on problem set 1, which is the second problem set, 0 index which will go out via PDF this weekend.

只要你乐意，上哪堂课都可以，这些课程不仅覆盖了本周的学习内容,也可能囊括了,下周要学习的知识,请大家把注意力集中到我们的第二本习题集--习题集1上，这周末会以PDF格式发布出来。

哈佛公开课 - 计算机科学课程节选