| 单词 | alum slate |
| 释义 | Definition of alum slate in English:alum slatenoun
OriginLate 17th century; earliest use found in William Simpson (fl. 1665–1677). Definition of alum slate in US English:alum slatenoun
OriginLate 17th century; earliest use found in William Simpson (fl. 1665–1677). |
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