| 单词 | notch sight |
| 释义 | Definition of notch sight in English:notch sightnoun
OriginMid 19th century; earliest use found in William H. Smyth (1788–1865), naval officer and surveyor. Definition of notch sight in US English:notch sightnoun
OriginMid 19th century; earliest use found in William H. Smyth (1788–1865), naval officer and surveyor. |
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