pectoral fins
英
美
- n.胸鳍
详细释义
名词 pectoral fin:
-
either of a pair of fins situated just behind the head in fishes that help control the direction of movement
双语例句
- Winglike pectoral fins extend along the sides of the head.
翼状的胸鳍沿头的两侧延伸生长。 - 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。
用作名词 (n.)
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