导论课程的关键就是第一节哲学课。
The crucial point about intro is it means first class in philosophy.
这就是我们要关注的第二点，也是这门课程的导论。
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。
That's what will concern us in this second, still introductory lecture to this course.
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