keel.son
n.Nautical （名词）【航海】 A timber or girder fastened above and parallel to the keel of a ship or boat for additional strength.内龙骨：固定在船或舟的龙骨之上或与之平行的木材或桁，以加强船的力量
来源：Alteration influenced by keel 受 keel的影响 of Middle English kelswin 中古英语 kelswin的变化 probably from Old Norse *kjôlsvon 可能源自 古斯堪的纳维亚语 *kjôlsvon kjôlr [keel] kjôlr [龙骨] svon [swine, timber] * see sô- svon [猪，木材] *参见 sô-
