pectoral fin

音標發(fā)音

Dorsal fin , tail fin and fat fins slightly yellow, pectoral fin , and ventral fin Tunqi gray.
背鰭、脂鰭和尾鰭稍帶淺黃色，胸鰭、腹鰭和臀鰭灰白色。
The eye sac, ear vesicle, heart, digestive tract, kidney, swim bladder, pectoral and tail fin were developed preferentially.
在整個發(fā)育過程中，眼、耳囊、心髒、消化道、腎髒、鰾、胸鰭和尾鰭等得到了優(yōu)先發(fā)育。
Finally they tied ropes to the shark's tail fin and behind its pectoral fin, and attached these ties to the rescue vessel, which towed the shark out through the harbour estuary.
最後他們用繩子綁在鯊魚尾鰭和胸鰭後麪，把繩子綁在救援船上，將鯊魚拖出港口。

the fin on each side of a fish near the front of its body, used for controlling the direction the fish goes in and for slowing it down

either of a pair of fins, situated just behind the head in fishes, that help to control the direction of