And, as I reminded you at the end of last day, the only reason I am doing this for you right now is I want to elucidate the principles.
就像我上次课的最后跟你们说过的那样,我现在给你们讲这些,仅仅是我想把原理阐释清楚。
麻省理工公开课 - 固态化学导论课程节选
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