His dorsal fin was down and his huge pectorals were spread wide.

它的脊鳍朝下，巨大的胸鳍大张。

The Pacific blue fin tuna is a sushi staple.

太平洋蓝鳍金枪鱼是寿司的主食。

Their classic tail fins point to the wide Texas sky.

他们经典的尾翼直指得克萨斯的广阔天空。

But as in any other sport confrontations happen usually with fins.

但就像在其他运动中一样有抗，抗通常发生在脚蹼上。

The image of a dorsal fin cutting through the sea surface is iconic.

背鳍划破海面是种标志性画面。

How many legs do they have? How many wings are there? Are there fins?

他们有多少条腿？有多少翅膀？是否有鳍？

We can see we see fin whales, humpbacks, minkes...the occasional blue whale.

我们可以看到长须鲸、座头鲸、小须鲸......偶尔会看到蓝鲸。

Be forever in the " fin club" of every set free dolphin.

使自己身处自由海豚之中。

He could see their wide, flattened, shovel-pointed heads now and their white-tipped wide pectoral fins.

他这时看得见它们那又宽又扁的铲子形的头，和尖端呈白色的宽阔的胸鳍。

Their back ends, several with iconic tail fins, point toward the big Texas sky.

他们的车尾朝天空，其中几辆还装有极具标志性的汽车尾翼。

Shark fin or not, he will have a lot on his plate after inauguration day.

不管有没有鱼翅，在就职典礼之后，他都会有很多事情要做。

What's wrong with his fin? -He looks funny.

他的鳍是怎么了？-他看起来很有趣。

Mudskippers try the same trick with their brightly coloured fins.

弹涂鱼用它们色彩鲜艳的鳍来玩同样的把戏。

It's hard to imagine fins like those evolving into sturdy, weight-bearing limbs… because they didn't.

很难想象这样的鳍能进化成沉重四肢… … 事实上它们也做不到。

The reasons you have fins, is because these fins causes the rocket to be stable.

尾翼的作用是保证火箭的稳定。

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

我想，答案是，你把带子放在尾鳍后面。

It was huge and grey, with a large fin. It was a shark!

它很大的，灰色的，有很大的鳍。这是一个鲨鱼！

So now we're putting in an identification spaghetti tag right into the dorsal fin.

所以现在要在背鳍上放一个识别标签。

Many of the threatened species are hunted for their meat and fins.

很多濒危物种因它们的肉和鱼鳍而被猎杀。

However, its back fins are poisonous, its sting is toxic and it eats other fish.

不过，其背鳍是有毒的，被刺伤的话会产生毒性。此外，狮子鱼也会吃其他鱼类。