RE: RE: 带娃玩PhET，一个有意思的教育仿真程序
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RE: 带娃玩PhET，一个有意思的教育仿真程序

angelina6688(76)
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为此还改过一次爷爷手机密码，爷爷搞不住他，有时为了做饭或者自己清闲，就给他手机了...老人也不好多说。

暑假我们为了这事 和他奶奶干了三架了

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