孩子有时stuck at a point. can not move on. 可以教他们慢慢理解这point
我孩子有时用math 严谨 想理解物理的有的approximation, 固体物理 或 plasma physics 有时
neglect this term, pick the other term
有时 totally opposite. Defitnitely frustrated sometimes.
孩子有时stuck at a point. can not move on. 可以教他们慢慢理解这point
我孩子有时用math 严谨 想理解物理的有的approximation, 固体物理 或 plasma physics 有时
neglect this term, pick the other term
有时 totally opposite. Defitnitely frustrated sometimes.
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