| 词汇 | alum |
| 释义 | alum noun [ U ] chemistry specialized uk/ˈæl.əm/ us/ˈæl.əm/ (chemistry) 明矾，矾（含铝的化学物质，作为染色剂或收敛剂） a chemical substance containing aluminium used in dyeing (= changing the colour of something) and as an astringent (= substance that causes skin to tighten) |
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