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单词 bluestone
释义 bluestone
I. \ˈ ̷ ̷ˌ ̷ ̷\ noun
Etymology: blue (I) + stone
1. : the hydrated copper sulfate CuSO4.5H2O
2. : a building or paving stone of bluish gray color; specifically : a sandstone quarried near the Hudson river
II. transitive verb
: to treat (as a net or a stream) with copper sulfate
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更新时间:2025/1/27 6:11:59