On a personal note, I argue that these two approaches both have positive and negative aspects and thereby a combination of these two approaches of learning is the best policy.
从个人角度而言，我认为这两种方式都有其正面和负面，因此，两者的结合才是更上策的作法。
WM: I can think of two aspects: a positive aspect and a negative aspect.
马：我能想到的有两方面：既有积极的一面又有消极的一面。
As to the natures influenced, there are two aspects: positive side and negative one.
从影响的性质来看，有积极的和消极的两个方面。
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