| 单词 | midnight oil |
| 释义 | Definition of midnight oil in English:midnight oilnoun figurative
OriginMid 17th century; earliest use found in Francis Quarles (1592–1644), poet. Definition of midnight oil in US English:midnight oilnoun figurative
OriginMid 17th century; earliest use found in Francis Quarles (1592–1644), poet. |
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