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1·That's what will concern us in this second, still introductory lecture to this course.

这就是我们要关注的第二点，也是这门课程的导论。

2·This course features a full reading list and introductory lecture notes for the class.

本课程有完整的阅读资料和导读性质的课堂讲稿。

3·Because this lecture is introductory, I'm not going to spend a great deal of time explicating the more difficult moments in his argument.

因为这门课是导读课程，我不会花太多时间，详细解释他的理论中的难点。