鳍

They are related to the bowfin and date back to the Eocene Epoch.

与弓鳍鱼近缘，在始新世就生活于欧洲和北美。

Unlike sturgeon, bowfin roe will turn red if heated.

鉴别方法是，弓鳍鱼鱼子受热后会变红）。

American Bowfin Caviar -, better known by its Cajun name "Choupique" is not related to, but is even more ancient than the sturgeons.

美国 弓鳍鱼鱼子酱。此鱼多刺，比鲟鱼还要古老。

Similar to sea bream; small spiny-finned fish found in bays along the southeastern coast of the United States.

类似于海鲷；美国东南沿岸的针状鳍小鱼。

During testing in Barcelona, Red Bull introduced a striking 'shark fin' extension to the RB4's engine cover.

从巴塞罗那测试，红牛便引入了一个醒目的"鲨鳍"翼延伸 RB4的引擎盖。

Of those swimming creatures that appear to have feet, as is the case with the molluscs, these creatures swim by the aid of their feet and their fins as well, and they swim most rapidly backwards in the direction of the trunk, as is the case with the cuttle-fish or sepia and the calamary; and, by the way, neither of these latter can walk as the poulpe or octopus can.

对于刚刚出现脚的动物，如同软体动物的情况，这些动物游泳同样是利用它们的脚和鳍，而且它们大多向主流的相反方向移动，如同乌贼和枪乌贼。并且，顺便说一句，后来介绍的这些动物都不能象章鱼一样行走。

The fins are sometimes a bright canary yellow.

鳍有时是一个明亮的金丝雀黄色。

Spotted seals called Western Pacific Cod Seal,belong to Carnivora,Caniformia,Phocidae,Phoca,They are second-class protection animals of China.

斑海豹又称西太平洋斑海豹，属食肉目、犬形亚目、海豹科、斑海豹属，是唯一能在我国海域繁殖的鳍足类动物，属国家二级保护动物，渤海辽东湾是全球斑海豹8个繁殖区之一。

Males are almost always on display, sticking their fins out, trying to catch the eye of a would-be admirer.

雄鱼时常展示他们，把他们的鳍尽数绽开，以得到周围赞许的目光。

Another characteristic is the presence of large black spots on the back and on both lobes of the caudal fin.

另一个特点是鳍的的大黑点，背上，并对这两种极限的尾。

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。