pectoral fin
英 [ˈpektərəl fin] 美 [ˈpɛktərəl fɪn]

n.

胸鳍；

英英释义

pectoral fin

• n.either of a pair of fins situated just behind the head in fishes that help control the direction of movement

双语例句

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。

权威例句

Oarfish
Yellowback Stingaree
Investigation of Shape Memory
The bHLH transcription factor hand2 plays parallel roles in zebrafish heart and pectoral fin development.
A pair of Sox: distinct and overlapping functions of zebrafish sox9 co-orthologs in craniofacial and pectoral fin development.
Pectoral fin locomotion in batoid fishes: undulation versus oscillation
The pectoral fin of Tiktaalik roseae and the origin of the tetrapod limb.
Rosenberger, L.J. Pectoral fin locomotion in batoid fishes: undulation versus oscillation. J. Exp. Biol. 204, 379-394
Yelon, D. et al. Parallel roles for the bHLH transcription factor HAND2 in zebrafish and pectoral fin development. Development 127, ...
KINEMATICS OF PECTORAL FIN LOCOMOTION IN THE BLUEGILL SUNFISH LEPOMIS MACROCHIRUS