| 单词 | penetration twin |
| 释义 | Definition of penetration twin in English:penetration twinnoun
OriginMid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. Definition of penetration twin in US English:penetration twinnoun
OriginMid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. |
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