鳍

They wear a black or blue-gray overcoat,and they have a white belly,[00:20.61]a pair of short legs,and two wings that serve as flippers.

它们身着一袭黑色或蓝灰色的大衣，露着白白的肚皮，长着一双短腿，两个翅膀就是它们的鳍。

In the fertile waters of French Polynesia's Tuamotu Archipelago, a school of blue-striped grunts beats a fast retreat as a pair of blacktip reef sharks lurk in the distance.

在肥沃的水域，法属波利尼西亚的土阿莫土群岛，一所学校的蓝色条纹咕噜鱼快节奏后退像一对黑鳍尖礁鲨鱼潜伏在远处。

Sharks and Grunts, French Polynesia, 1997 Photograph by David Doubilet In the fertile waters of French Polynesia's Tuamotu Archipelago, a school of blue-striped grunts beats a fast retreat as a pair of blacktip reef sharks lurk in the distance.

意译：鲨鱼和咕噜鱼，法属波利尼西亚，1997年。在肥沃的水域，法属波利尼西亚的土阿莫土群岛，一所学校的蓝色条纹咕噜鱼快节奏后退像一对黑鳍尖礁鲨鱼潜伏在远处。

The fish is propelled by undulation s of a long-based dorsal fin while the body axis is in many cases held straight in swimming.

以依靠长背鳍推进的&尼罗河魔鬼&为研究对象，对柔性长鳍波动推进模式的运动学进行了研究。

A class of fish having a skeleton composed of bone in addition to cartilage .

有软骨支撑鳍的一个大硬骨鱼类。

Its translucent gills, in the sunshine, will show yellow-green, Gill, after a pair of pectoral fins, and other fish are not the same as the surface is a fan-shaped fins, and swimming up and is like a dance butterfly.

它的鳃半透明的，在阳光的照耀下，会显出黄绿色，鳃后是一对胸鳍，与其它的鱼不一样的是鳍面是扇形的，游动起来仿佛是一只翩翩起舞的蝴蝶。

MAIN OUTCOME MEASURES: The FIM instrument, arm crank exercise test, wheelchair skills, maximum strength, anthropometry, and lipid levels.

主要部份结果措施：鳍工具，脾气暴燥的手臂练习测试，轮椅技术，最大的力量，人体测量学和脂质水平。

Cutting edge inclination and rake angle are the major factors for fins′side-curl and upward-curl.

刃倾角和前角分别是导致传热鳍片边缘卷曲和向上卷曲的主要因素。

Deep-bodied sooty-black pelagic spiny-finned fish of North Atlantic and North Pacific, valued for food.

北大西洋和北太平洋远洋深水中熏黑色刺状鳍鱼，珍贵食品。

The boy had given him two fresh small tunas, or albacores, which hung on the two deepest lines like plummets and, on the others, he had a big blue runner and a yellow jack that had been used before; but they were in good condition still and had the excellent sardines to give them scent and attractiveness.

孩子给了他两条新鲜的小金枪鱼，或者叫做长鳍金枪鱼，它们正像铅垂般挂在那两根最深的钓索上，在另外两根上，他挂上了一条蓝色大鲹鱼和一条黄色金银鱼，它们已被使用过，但依然完好，而且还有出色的沙丁鱼给它们添上香味和吸引力。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。