It has also a large tail fin.

它还有一个巨大的尾鳍。

This noose slid as far as the caudal fins and came to a halt.

这个绳结一直滑到尾鳍就停了下来。

I think, the answer is that, you put the strap right behind the fin.

我想，答案是，把带子放在尾鳍后面。

There's a lot of intricate things about surfboards, different numbers of fins, size of fins, the whips, the curve.

冲浪板有复的东西，不同数量的尾鳍，尾鳍的大小，脚绳，曲度。

It has a series of little bumps on the back of its fluke, instead of having a dorsal fin.

它的尾鳍背部有一系列小凸起，而不是背鳍。

I saw tail fins raised like giant fans.

我看到尾鳍像巨大的扇子一扬起。

And even early transitional croc-relatives, like that Magyarosuchus, had a tail fin!

甚至早期的过渡性鳄鱼亲属，如 Magyarosuchus，也有尾鳍！

Inspired by the little creature, they added a special chest and tail fin to their robot.

受到这个小生物的启发，他们为他们的机器人添加了一个特殊的胸部和尾鳍。

You know, so, you have your fin there and you put the strap right behind it so the board can't slide off backwards.

知道，所以，把尾鳍放在那里，把带子放在它后面，这木板就不会向后滑动。

At that point the killer whales separate the grey whales by manoeuvring between them or dragging the calves away by their tail flukes or fins.

此时，虎鲸会在灰鲸之间移动或抓住幼鲸的尾鳍将幼鲸拖走，从而将它们分开。

These reptiles lost their body armor, had feet that looked like flippers, and used shark-like tail fins to move through the water.

这些爬行动物失去了防弹衣，脚看起来像鳍状肢，并使用像鲨鱼一的尾鳍在水中移动。

Like Ichthyosaurus and Plesiosaurus, Mosasaurus had tail fins and limbs modified into paddles, but the bodies and tails of Mosasaurus were more elongate.

与鱼龙和蛇颈龙一，沧龙的尾鳍和四肢被改造成了桨叶，但沧龙的身体和尾巴更加细长。

And … they were kinda weird, with long eel-like bodies, tail fins, a stiff rod of tissue down their backs, and giant bulging eyes.

而且… … 它们有点怪异，长着鳗鱼般的长身体、尾鳍、一根坚硬的组织棒从背上垂下来，还有巨大的鼓鼓囊囊的眼睛。

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.

看见金鱼的鱼鳍了吗? 金鱼有两个胸鳍、两个腹鳍、一个背鳍、一个尾鳍, 还有尾巴附近的一个臀鳍。

It had a tail fin shaped like an oar, short ribs that ran the length of its body, and gill bars like a fish.

它有一个形状像桨的尾鳍，贯穿整个身体的短肋骨，以及像鱼一的鳃条。

" Stern all! " And, as we rapidly backed from the whale, he flung his tremendous fluke high in the air, covering us with a cloud of spray.

“全速前进！ ” 当我们迅速向后退去时，鲸鱼将巨大的尾鳍高高抛向空中，溅起一团水花。

But Magyarosuchus still had osteoderms - so it looks like the tail fin was an earlier adaptation in the evolution of this group than the loss of armor.

但是 Magyarosuchus 仍然有骨质层——所以看起来尾鳍是这个群体进化过程中比失去盔甲更早的适应。