Which two layers make up the dermis?

哪两层构成真皮？

There's two layers to these old magnetic tapes.

一旦它们彼此分离 这带子就成废物了。

Cnidarians grow from embryos that have only two layers of cells.

刺胞动物是由只有两层细胞的晶胚发展而来的。

She says the mask should also have at least two layers.

她说，这种口罩也应该至少有两层。

They have a coat of fur two layers thick that insulates them from the cold.

它们的皮毛是厚厚的两层，足以抵御寒冷。

All the Ediacaran creatures were diploblastic, meaning they were built from two layers of tissue.

埃迪亚卡拉动物都是双胚层的，即它们由两层组织构成。

The way your body's moving around might bump the two layers against each other, too.

你身体的活动也可能让两层膜互相碰撞。

So picture it as a cake with two layers, the maternal layer and a fetal layer.

所以可以把它想象成一个双层蛋糕，“母体层”和“胎儿层”。

Sandwiched between two layers of skin, the mesoglea is more than 95% water held together by protein fibers.

夹在两层表皮中间的，“中胶层”由95%的水分 通过蛋白质纤维凝结组成。

It consists of two layers of transparent hair, a soft thick undercoat and a layer of hollow guard hairs.

它有两层透明皮毛，一层是柔软厚实的皮毛，另一层是中空的护毛。

At its very center is the core, which actually has two layers, the inner core and the outer core.

位于正中心的是地核，它实际上有两层，内核和外核。

Removing two layers of censorship from the painting, it was finally free to boast its provocative original details.

从这幅画中去除了两层审查，它终于可以自由地提展示挑衅性的原始细节。

Two layers of vanilla, two layers of chocolate.

两层香草，两层巧克力。

These underground tremors revealed that the thin martian crust has at least two layers — maybe as many as three.

这些地下震颤显示，薄薄的火星地壳至少有两层——也许多达三层。

Typical submarines are built with two hulls, think of it like two layers of skin with a space in between them.

典型的潜艇有两层船壳，把它想象成两层表皮，中间有一个空间。

What's more, because the sun-warmed surface waters are less dense than the colder waters below, the two layers don't easily mix.

更重要的是，由于太阳照射温暖的表层水比下面较冷的水密度低，所以这两层水不容易混合。

The tundra consists of two layers: the top layer called the active layer and the second layer referred to as permafrost.

苔原由两层构成，顶层称为活动层，第二层称为冻土层。

Two layers contained tiny nickel particles.

两层含有微小的镍颗粒。

Think of stress and prominence as two layers over the sentence.

将重音和突出部分视为句子的两层。

There's a layer of water between two layers of soap.

两层肥皂之间有一层水。