This condition, called neoteny, means it keeps its tadpole-like dorsal fin, which runs almost the length of its body, and its feathery external gills, which protrude from the back of its wide head.
这种情况，叫做动态持续，意味着它保留着它的像蝌蚪一样的贯穿整个身体的背鳍，从头后面突出的像羽毛一样的外腮。
Some shark fin soup consumers assume that finning doesn't hurt the shark, or that fins grow back; neither is true.
一些鱼翅汤消费者想当然地以为割掉鱼鳍对鲨鱼没什么影响，甚至以为鱼鳍会再生，很遗憾这些看法都是错的。
The tail flats feature swept-back tips forward of the swept-back and tapered fin with a blunt tip.
尾平翼特征是顶端有一个上端后掠的垂直安定翼和锥形尾垂翼具有一个钝形顶端。
The humpback has a small dorsal fin located towards the tail flukes about two-thirds of the way down its back.
驼背鲸有一个较小的背鳍，大约是背部三分之二接近尾部的中央。
The tail flats are high-mounted, swept-back with a swept-back and tapered fin.
后掠上置尾垂翼连同一个后掠锥形尾平翼。
If a zebrafish loses a chunk of its tail fin, it'll grow back within a week.
假如失去一整块的斑马鱼尾鳍，但一个星期后就会成长。
The system implements the parametric design and drawings of many typical kinds of refrigerating parts, e. x. the plate-tube evaporator, the single back-fin evaporator and the box condenser.
该系统完成了对典型制冷装置的换热器部件，如板管式蒸发器、单脊翅片管式蒸发器、箱壁式冷凝器的参数化设计和绘图；
A certain amount of nail head or fin within an acceptable range of tube's back side can improve the area of access to radiation.
在炉管背火侧的一定范围内增加适量的钉头或翅片，可以提高背火侧的受辐射面积。
The tail boom tapers from the main body to the swept-back, tapered fin with a rotor on the right. Two flats are mounted on the both side of the boom.
尾梁从机身渐细到后掠尾垂翼，尾螺旋桨在锥形尾垂翼右侧，二个尾平翼被装在尾梁两侧。
After shutdown, the high-pressure plate-fin heat exchanger is recovered to normal run after elimination of the drag through back-blowing of its oxygen passage.
在设备停车后对高压板翅式换热器氧通道进行反吹以消除阻力，使高压板翅式换热器正常运行。
After shutdown, the high-pressure plate-fin heat exchanger is recovered to normal run after elimination of the drag through back-blowing of its oxygen passage.
在设备停车后对高压板翅式换热器氧通道进行反吹以消除阻力，使高压板翅式换热器正常运行。
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