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

它脊朝下耷拉着，巨大胸大张着。

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铲子形头，和尖端呈宽阔胸。

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米虎鲸，用其巨大胸将其驱离。

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，它用胸在海底行走，它头部结构可以吸引猎物。

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, , 胸帮助（鱼儿）对准水流方向, 以这种方式来减少水对鱼身阻力。

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.

三角形胸，头部侧面小眼睛，扁平细长尾巴，和独特斑点，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.

你看见金鱼鱼了吗? 金鱼有两个胸、两个、一个、一个尾, 还有尾巴附近一个臀。

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，它用胸在海底行走， 用头上结构来吸引猎物。

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样子，它那翅膀般胸大张着，直竖大尾巴划破黝黑海水。