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破坏submerge淹没drought旱灾新托福分类词汇新托福分类词汇下载7chemistry化学chemicalproperty化学特性，化学性质chemicalcompositio
makeup化学成分chemicalage
t化学试剂chemicalreactio
化学反应chemicalcha
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聚合作用plastic塑料dye染料cosmetics化妆品新托福分类词汇新托福分类词汇下载8．physics　物理physics物理mecha
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