| 释义 |
DEFINITIVE EXAMPLES 权威例句〔ray〕Any of various marine fishes of the order Rajiformes or Batoidei, having cartilaginous skeletons, horizontally flattened bodies, and narrow tails.鳐；魟：鳐目或魟目中繁多的水生鱼类中的一种，骨软，身体扁平，尾窄美国传统〔true rib〕Any of the ribs that are attached to the sternum by a costal cartilage, especially any of the seven upper ribs on either side of the thorax in human beings.真肋：通过肋骨软骨部分与胸骨附结的肋骨，尤指人体胸部两边的七根上肋美国传统 |