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    B1
    #gold#aqua#outward#reaction

    Gold Dissolves in Aqua Regia (reaction only)

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    林宜悉 posted on 2020/03/27
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    Video vocabulary

    outward

    US /ˈaʊtwəd/

    ・

    UK /ˈaʊtwəd/

    • Adjective
    • Going away from a place that will be returned to
    • Seeming to be from the outside
    B1
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    gold

    US /goʊld/

    ・

    UK /gəʊld/

    • Adjective
    • Dark yellow color often seen in sunsets
    • Uncountable Noun
    • Soft yellow metal that is very valuable
    A2
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