About once a year, houses made from adobe should be given a layer of mud.

VOA: special.2009.01.12

If this is the particular kind of axon that is 'myelinated', then it might have a layer of a special substance called myelin in sheathing the axon.

假设这是一种特殊的有髓鞘的轴突,它表面上会像鞘一样地包裹上一层,称为鞘磷脂的特殊物质

耶鲁公开课 - 生物医学工程探索课程节选

But I'm sure you can easily see how these styrofoam balls could, in fact, be a mono layer of gold nuclei.

这个实验怎么工作的,我们先来做些计算，但我相信你们都已经。

麻省理工公开课 - 化学原理课程节选

Cupcakes are individual sized cakes topped with a layer of sweet icing.

VOA: special.2009.09.11

And, this is what you hear a lot about in the news, Kyoto, and all this kind of thing about destruction of the ozone layer.

这是你所听到了很多新闻里相关的东西，京都议定书,以及所有这类破坏臭氧层的事情。

麻省理工公开课 - 固态化学导论课程节选

The artist can then add a second color of glass to make designs over the first layer of glass.

VOA: special.2009.09.16

This surface layer thickens at an early stage in a mouse after 8 days of development.

发育8天后，老鼠早期胚胎的,外胚层开始增厚。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

L is for layers.Wearing loose, lightweight clothes, one layer on top of another, is better than wearing a single heavy layer of clothing.

VOA: special.2009.12.23

What Alexander had wanted to do was to take all these different peoples, who spoke different languages and had different customs, and use a Greek layer to sort of unite his empire overall.

亚历山大的理想是，让所有说不同语言，不同习俗的民族，用一种希腊文化统一帝国。

耶鲁公开课 - 新约课程节选

If the ground does freeze in your part of the world, simply cover your carrot garden with a thick layer of leaves or straw.

VOA: special.2009.02.24

The lipids will form a bi-layer where the water soluble part of the lipid points out of this layer and the oily part points in.

脂质会形成双层膜,水溶性部分朝向膜层外,而脂溶性的部分朝向双层膜内部

耶鲁公开课 - 生物医学工程探索课程节选

Drop several seeds over the surface of the pot and cover with a thin layer of vermiculite, a substance that can hold air, water and nutrients.

VOA: special.2009.04.21

I also want to give another layer to this understanding of O'Connor as a religious writer by looking at what she said in her correspondence to one of her readers who asked her some questions, and this is on the handout that I passed around.

我还想给大家另一层,理解这位宗教作家的方式,那就是去看她,回复一位读者问题的信件，这在我发给大家的材料上有。

耶鲁公开课 - 1945年后的美国小说课程节选

So did a thick, solid layer of sheep dung covering the floor.

VOA: special.2010.08.03

s a single cell layer of a damage cochlea.

损伤后的耳蜗只有一层薄薄的细胞膜，There’

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

A thin layer of water runs over this surface.

VOA: special.2009.05.06