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

它脊鳍朝下耷拉着，巨大胸鳍大张着。

And then the male was a tighter belly and a dorsal rope on the top.

雄鱼腹部较紧，背部有一根线。

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。

Sharks don't have to surface and show us that telltale dorsal fin like in Jaws because we're around and to prove they exist.

鲨鱼不是非得游上来像电影大白鲨似让我们看到暴露身份背鳍，因为在我们周围要证明它们存在。

He was built as a sword fish except for his huge jaws which were tight shut now as he swam fast, just under the surface with his high dorsal fin knifing through the water without wavering.

它长得和剑鱼一般，除了它那张正紧闭着大嘴，它眼下就在水面下迅速地游着，高耸脊鳍象刀子般划破水面，一点不抖动。

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。

The initial thud comes from when those dorsal bursae collide.

最初撞击声来自背侧黏液囊碰撞。

His tiny dorsal fin is still floppy from being squashed up inside Mum.

它小背鳍还软软，因为被妈妈挤在里面。

There needs to be some mechanism that specifies where this tail is going to be, how it's going to be oriented, what is posterior, what is anterior, what is left, what is right, what is dorsal, what is ventral.

需要有某种机制来明确尾巴位置，尾巴方向，什么是后，什么是前，什么是左，什么是右，什么是背部，什么是腹部。

Over time, if enough of the neurons die in the caudate and putamen, which together form the dorsal striatum, then it can cause actual loss of brain tissue volume in that area and expansion of the lateral ventricles.

随着推移，如果由尾状核和壳核构成背侧纹状体内死亡神经元细胞越来越多，会引起该区域脑组织减少，进而导致侧脑室扩大。

Kidneys are retroperitoneal, which means they lie between the dorsal wall and the peritoneum — the membrane that surrounds the abdominal cavity — rather than inside the cavity itself, like your intestines and stomach do.

肾脏位于腹膜后，这意味着它们位于背壁和腹膜之——腹膜是包围腹腔膜——而不是像你肠胃那样在腔内。

Those animals are only members of the genus Balaenoptera furnished with dorsal fins, and like sperm whales, they're generally smaller than the bowhead whale.

这些东西不过是鲸，有脊鳍动物，大头鲸一样。它们通常比普通白鲸小一些啊！

So we have two dorsal horns that contain cell bodies of sensory neurons, and two ventral horns that contain cell bodies of motor neurons.

脊髓含有两个包含感觉神经元胞体脊髓后角和两个包含运动神经元胞体脊髓前角。

He takes photos of their dorsal fins. Each notch, scar, and blemish is a unique fingerprint that allows scientists to identify individual animals.

他拍摄了那些海豚背鳍照片。每一个划痕、伤疤和小瑕疵都是独特印记，这些印记可以让学家们认出它们谁是谁。

The oral surfaces covered in keratinized epithelium include the hard palate, the dorsal surface, or top, of the tongue, and the gingiva.

口腔表面由角化上皮覆盖结构包括硬腭、舌背侧面（或上面）与牙龈。

They can be identified by the lack of a part of a body often seen on other whales: a dorsal fin.

人们可以通过缺少在其他鲸鱼身上常见身体部位来识别这种鲸鱼：背鳍。

But arthropods have ventral nerves, and dorsal guts...you know, the poop chute.

但是节肢动物有腹神经和背肠子… 你懂，就是粪便槽。

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

它尾鳍背部有一系列小凸起，而不是背鳍。

The subgenual anterior cingulate is overactive and in another region known as the left dorsal lateral prefrontal cortex.

在抑郁患者大脑中，皮质下前扣带回过度活跃，而另一个被称为左背外侧前额叶皮层区域则活跃度较低。

Teeth, gills, vertebrae, or dorsal fin?

牙齿、鳃、脊椎骨还是背鳍？