dorsal

背的, 脊的英释中释adjon or relating to the back of an animal or fish

1 dorsal fin,n. 背鳍

2 dorsal root,背根；后根

3 dorsal horn,背角；[医]灰质后角

4 dorsal root ganglion,背根神经节

1 a shark’s dorsal fin.鲨鱼的背鳍