homocercal fin

同根派生

英汉例句

• A feather, wing, fin, or similar appendage.
  羽、翼或鳍状结构羽、翼、鳍或类似的悬着物
• The shark's fin sliced the water.
  鲨鱼的背鳍像刀样迅速划破水面。
• The shark's dorsal fin was cut off by the fisherman.
  鲨鱼的背鳍被渔夫割了下来。
• Come, old fellow, tip us your fin.
  得了，老朋友，跟我们握握手吧。
• He was the first to spy the triangle fin of a shark coming towards us.
  他第一个发现一条鲨鱼的三角形鳍向我们游来。