Keel or dragon bones refers to a principal longitudinal beam along the center line of a ship's bottom, a key component of its hull structure.
龙骨是指船底中轴线上的一根主要纵向梁，是船体结构的重要组成部分。
| Chinese | 龙骨 |
|---|---|
| English | keel, dragon bones |
| Pinyin | long2 gu3 |
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