1. 活動(dòng)防浪板帆船上一活動(dòng)龍骨，可以繞樞軸扯起以減少船在淺水的吃水深度
   A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water.
2. 運(yùn)貨船一種運(yùn)貨的河流用船，有龍骨但無帆
   A riverboat with a keel but without sails, used for carrying freight.
3. 船桅，桅桿一條高的（有時(shí)為分段的）垂直檣，從帆船的龍骨或甲板直立起來以支持帆和操縱裝置
   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. 工人正在給那艘船安龍骨。
   The workers are laying a keel of the ship.

龍的英語翻譯：

骨的英語翻譯：