| 单词 | working door |
| 释义 | Definition of working door in English:working doornoun Metallurgy
OriginMid 19th century; earliest use found in Andrew Ure (1778–1857), chemist. Definition of working door in US English:working doornoun Metallurgy
OriginMid 19th century; earliest use found in Andrew Ure (1778–1857), chemist. |
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