pectoral fin meaning in English
【鱼类】胸鳍。
Examples
- Large bulging gill - covers , the pair of pectoral fins are placed almost under the gills ; measures 4 - 5 cm long
长有大而胀的鳃盖，一对腹鳍差不多全藏在鱼鳃底 - " many fish larvae hatch without fully formed pectoral fins and all hatch without a swim bladder , so similar problems could occur for them .
“很多小鱼孵化出来时，胸鳍还没有完全成形，而且所有的鱼孵化时都还没有形成鱼鳔。 - Each cleaner owns a “ station ” on a reef where clientele come to spread their pectoral fins and adopt postures that offer the cleaner a chance to do its job
每条裂唇鱼都在礁石上开了个服务站，顾客到那里只要展开胸鳍，摆出需要服务的姿势，裂唇鱼就知道生意上门了。 - Its powerful “ wings ” ( actually pectoral fin flaps ) enable it to burst from the surface of the sea and soar several feet into the air before plummeting back to its natural home , landing with a loud slap
它那有力的“双翼” （其实是可以拍动的胸鳍） ，令它得以冲出水面数?高，然后再重重的“啪”一声落回水面。 - The measurements used are fork length , head length , upper jaw length , snout length , length of dorsal fin base and anal fin base and the distances from the tip of snout to insertion of dorsal fin , to pectoral fin , to ventral fin and to hard margin of preopercle
此所用于分析之外部非体节形质计有：尾叉长、头长、上颚长、吻长、眼径、背鳍基底长、臀鳍基底长以及吻端到前鳃盖骨后绿、背鳍起点、腹鳍起点、臀鳍起点等11个形质。