It has also a large tail fin.

它还有个巨大的尾鳍。

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

这个绳结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，你把带放在尾鳍后面。

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

冲浪板有很多复杂的东西，不同数量的尾鳍，尾鳍的大小，脚绳，曲度。

I saw tail fins raised like giant fans.

我看到尾鳍像巨大的样扬。

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！

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

你知道，所以，你把尾鳍放在那里，把带放在它后面，这样木板就不会向后滑。

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

这些爬行失去了防弹衣，脚看来像鳍状肢，并使用像鲨鱼样的尾鳍在水中移。

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

与鱼龙和蛇颈龙样，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。

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

它有个形状像桨的尾鳍，贯穿整个身体的短肋骨，以及像鱼样的鳃条。

It would slam its flukes down on the surface of the water--lobtailing, as it is known--then dive and swim round emitting a cloud of bubbles.

它会用尾鳍猛击水面——俗称“抛尾”——然后潜入水中并游，喷出团气泡。

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.

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

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、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。

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——所以看来尾鳍是这个群体进化过程中比失去盔甲更早的适应。