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单词 fuller's earth
释义 full·er's earth
noun
Etymology: Middle English fulleres erthe
: a white to brown naturally occurring earthy substance resembling potter's clay but lacking in plasticity, consisting chiefly of the clay minerals montmorillonite and attapulgite, and used in fulling cloth and now especially as an adsorbent (as in refining and decolorizing oils and fats) and as a catalyst
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