The word "alum" is a noun referring to a double sulfate salt of aluminum, or a crystalline substance used as an astringent.
The word "alum" is a noun referring to a double sulfate salt of aluminum, or a crystalline substance used as an astringent.
| 单词 | alum |
|---|---|
| 音标 | [ˈæləm] ['æləm] |
| 释义 | n.["明矾，矾","白矾"] |
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