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

它的脊拉着，巨大的胸大张着。

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的铲子形的头，和尖端呈白色的宽阔的胸。

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

座头鲸向 8 米长的虎鲸发起攻击，用它巨大的胸将它们赶走。

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.

红唇蝙蝠鱼，它用胸在海底行走，它头部的结构可以吸引猎物。

Others think it moved like a mudskipper - propelling its body forward using its pectoral fins, kinda like a human using crutches.

其他人则认为它像弹涂鱼一样移动——用胸推动身体向前，有点像人类用拐杖。

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, 腹, 胸帮助（鱼儿）对准水流向, 以这种减少水对鱼身的阻力。

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.

为什么是红唇蝙蝠鱼，它用胸在海底行走， 用头上的结构吸引猎物。

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，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.

你看见金鱼的鱼了吗? 金鱼有两个胸、两个腹、一个背、一个尾, 还有尾巴附近的一个臀。

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，它那翅膀般的胸大张着，直竖的大尾巴划破黝黑的海水。