音标:[ˈpektərəl fin] ;
n. 胸鳍
词型变化:名词复数形式 : pectoral fins

pectoral fin的用法和样例:

例句

用作名词(n.)
  1. Winglike pectoral fins extend along the sides of the head.翼状的胸鳍沿头的两侧延伸生长。
  2. Oddly enough, this ventilation shift may have kicked off the gradual morphing of the shoulder girdle and pectoral fins.奇怪的是,这呼吸上的改变有可能启动了前肢带与胸鳍的形态逐渐改变。

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