When not in use, the fins are tucked into special grooves or depressions so that they lie flush with the body and do not break up its smooth contours.
当鱼不使用鱼鳍时，会将它们折叠起来，收回到特殊的沟槽或者凹陷部位；这样鱼鳍就可以与身体保持齐平，以维持它们平滑的外形。
They are intelligent, communicate with each other, have the ability to learn, do tricks, play jokes, and can almost use their fins as hands.
它们非常智慧，相互之间能够联系，有学习的能力，会戏法，能开玩笑，还可以几乎用他们的鳍当做手掌！
Destruction doesn't only come from the sea, either. Other super accurate systems, like certain Guided Bomb Units (GBU) carried on F15E Strike Eagle planes, use lasers and fins for guidance.
当然不仅海上可以发射这些导弹，其他的超级精确制导系统，比如某些悬挂在F15E战鹰攻击机上的制导导弹（GBU），通过激光和尾翼制导。
Once airborne, they use long pectoral fins and shorter pelvic fins on the sides of their bodies to create lift, much like the wings of an aircraft.
达到空中后，他们利用身侧的长胸鳍及短腹鳍产生升力，类似于机翼。
Nine fish that use handlike fins to walk, rather than swim, off Australia were identified as new species in May.
这种奇特的鱼用像手一样的鳍片在水底走路，而不是游泳！ 这可是今年5月在澳大利亚的海岸最新鉴定出这样的新物种。
Instead of directly going from with fins to without fins, you can also try to use shorter ones for a while or trim your regular ones progressively.
而不是直接去从与翅无鳍，你也可以尝试使用短一会儿或修剪你的常规的圆满。
Don't use the fins for more speed or power, but just allow the larger surface area to push you forward a bit more.
不要用鳍为更多的速度或权力，但仅允许更大的表面积来推动你向前多一点。
If your ankles are inflexible and you can't point the feet and toes away from the body, use swimming fins more often.
如果你的脚踝是呆板的，你不能点脚和脚趾离开身体，用游泳脚蹼更多。
The outdoor deck is minimally delineated by use of black butt timber fins which focus the field of vision solely on the spilling water of the above ground pool.
户外甲板用黑色粗端木翅片来界定，只将视野聚集在泳池上方的溢水。
But many fishes use oscillating pectoral fins for their maneuvers at low swimming speed.
在低速情况下，很多鱼类是利用其胸鳍实现良好的动力定位和机动。
If you're not getting propulsion, it can be helpful to use a pair of fins.
如果你的蝶动没什么前进动力的话，使用脚蹼会对你有帮助的。
Batfish are poor swimmers, preferring to use their strangely adapted pectoral fins like legs to crawl about the seafloor.
蝙蝠鱼是可怜的游泳者，更喜欢用它们的奇妙的适合的胸鳍像脚爬行大约在海底。
The whole building is raised above its site on fins of concrete, featuring arched, triangular and rectangular cutouts that allow visitors to use the area as a covered walkway.
整个建筑被混凝土的两翼托举到地面以上。混凝土结构设有拱形、三角形和矩形的开孔，允许参观者将这些区域作为走廊。
The whole building is raised above its site on fins of concrete, featuring arched, triangular and rectangular cutouts that allow visitors to use the area as a covered walkway.
整个建筑被混凝土的两翼托举到地面以上。混凝土结构设有拱形、三角形和矩形的开孔，允许参观者将这些区域作为走廊。
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