dorsal [ˈdɔ:rsl]

例句:

• a shark's dorsal fin
  鲨鱼的背鳍
  
• His dorsal fin was down and his huge pectorals were spread wide.
  它的脊鳍朝下耷拉着,巨大的胸鳍大张着.
  
• There are usually no dorsal pores in the first few intersegmental grooves.
  身体前几个节间沟内经常无背孔.
  
• A dorsal ridge of slate-coloured rock.
  来自Quiller
• The dorsal plumes of the Egrets.
  来自A. Newton
• The whales are jet-black in color and have no shark-like dorsal fin.
  来自CNN