二年級STEM

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20190621_091628	20190621_092123	20190621_092317	20190621_092352	20190621_092411
20190621_092454	20190621_092504	20190621_093021	20190621_093126	20190621_093236
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20190621_115940	20190621_120041	20190621_121622	20190621_121638	DSC_3807

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