龙骨

1. 活动防浪板帆船上一活动龙骨，可以绕枢轴扯起以减少船在浅水的吃水深度
   A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water.
2. 运货船一种运货的河流用船，有龙骨但无帆
   A riverboat with a keel but without sails, used for carrying freight.
3. 船桅，桅杆一条高的（有时为分段的）垂直樯，从帆船的龙骨或甲板直立起来以支持帆和操纵装置
   A tall vertical spar, sometimes sectioned, that rises from the keel or deck of a sailing vessel to support the sails and running rigging.
4. 工人正在给那艘船安龙骨。
   The workers are laying a keel of the ship.

龙的英语翻译：

骨的英语翻译：