His dorsal fin was down and his huge pectorals were spread wide.

它的脊鳍朝下耷拉，巨的胸鳍。

He could see their wide, flattened, shovel-pointed heads now and their white-tipped wide pectoral fins.

他这时看得见它们那又宽又扁的铲子形的头，和尖端呈白色的宽阔的胸鳍。

The humpback charges the 8-meter-long orcas, driving them away with its massive pectoral flukes.

座头鲸冲向那群身长8米的虎鲸，用其巨的胸鳍将其驱离。

Why it's the red-lipped batfish, which uses its pectoral fins to walk on the ocean floor, and the structure on its head to attract prey.

唇蝙蝠鱼，它用胸鳍在海底行走，它头部的结构可以吸引猎物。

The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).

鱼的背鳍, 腹鳍, 胸鳍帮助（鱼儿）对准水流方向, 以这种方式来减少水对鱼身的阻。

Its triangular pectoral fins, tiny eyes on the side of its head, flattened slender tail, and distinct spots and blotches make them truly a spectacular sight to see.

三角形的胸鳍，头部侧面的小眼睛，扁平细长的尾巴，和独特的斑点，真是让人目不暇接。

Do you see the fins of the gold-fish? It has two breast-fins, two belly-fins, a back-fin, a tail-fin, and a fin on its under side near the tail.

你看见金鱼的鱼鳍了吗? 金鱼有两个胸鳍、两个腹鳍、一个背鳍、一个尾鳍, 还有尾巴附近的一个臀鳍。

Why it’s the red-lipped batfish, which uses its pectoral fins to walk on the ocean floor, and the structure on it’s head to attract prey.

为什么是唇蝙蝠鱼，它用胸鳍在海底行走， 用头上的结构来吸引猎物。

Now that he had seen him once, he could picture the fish swimming in the water with his purple pectoral fins set wide as wings and the great erect tail slicing through the dark.

既然这鱼他看见过一回，他就能想象它在水里游的样子，它那翅膀般的胸鳍，直竖的尾巴划破黝黑的海水。