| 单词 | alum |
| 释义 | alum alum /ˈæl.əm/ noun [U] SPECIALIZED ► F0 a chemical substance containing aluminium used in dyeing (= changing the colour of something) and as an astringent (= substance that causes skin to tighten)Thesaurus+: ↑Specific chemicals, chemical compounds and gases , ↑Substances and structures in the body , ↑Types of chemical |
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