n.内龙骨
Lucy Kelson: I think your the most selfish human being on the planet. 露西：“我认为你是地球上最自私的人。”
Gutters or channels on each side of a ship's keelson that drain bilge water into the pump well. 污水道，通水孔船底龙骨两侧用来排污水的水槽或水道
As one can tell from the photos, I made just 6 frames and clamped them together with a keel and keelson and began planking. 从照片可知，我只制作6个肋骨，用龙骨和内龙骨把它们夹在一起，并开始铺板。
a horizontal beam (or plate) connected to the top of a ship's vertical keel or to the keelson. 连接船只的直立龙骨的顶部和内龙骨的平板。
A Tentative Study of Reasonableness About Kelson's Essential Theory of Basic Norm 试论凯尔森基础规范理论的合理性
