| 单词 | roof slate |
| 释义 | Definition of roof slate in English:roof slatenoun
OriginLate 18th century; earliest use found in Richard Kirwan (1733–1812), chemist and mineralogist. Definition of roof slate in US English:roof slatenoun
OriginLate 18th century; earliest use found in Richard Kirwan (1733–1812), chemist and mineralogist. |
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