Beneath the soil lies a layer of bedrock.
土壤下面有一层基岩。
This seam of coal reposes on a layer of clay.
这个煤层处于一层黏土岩之上。
When the Nile is in flood, it deposits a layer of mud on the fields.
尼罗河泛滥时，在田野上沉积下一层泥。
The archaeologists had to remove a layer or reeds and ropes that covered the burial.
考古学家已经去除了一层覆盖于木乃伊上的芦苇和绳索。
You see, adult female birds during egg production produce a layer of spongy bone tissue inside certain long bones.
你看，成年雌鸟在产蛋的过程中会在某些长骨内产生一层海绵状的骨组织。
It sews leaves together in the shape of a cup, then it adds a layer of straw to the inside of the cup and lays its eggs there.
它把叶子缝合成杯状，然后在杯子里面铺上一层稻草，在那里产卵。
During the seventeenth and eighteenth centuries, the entire site became covered with a layer of hard grey clay, which minimised further erosion.
在十七世纪和十八世纪，整个遗址被一层坚硬的灰色粘土覆盖，这极大减少了进一步的侵蚀。
Just below the chromatophores is a layer of cells that reflect light from the environment, and these cells help the octopus create a precise match with the colors that surround them.
色素团下面是一层细胞，它可以反射周围环境的光，这些细胞可以帮助章鱼精确地匹配周围的颜色。
Geologists think that this fluidized ejecta crater indicates that a layer of permafrost, or water ice, lies just a few meters under the surface.
地质学家认为，这个具有流体化喷出物的陨石坑表明，在地表下几米深处有一层永久冻土层或水冰。
Five tons of soil would fill a small dump truck; if spread over an acre, it would make a layer slightly less than the thickness of a dime.
五吨的土会装满一辆小型自卸式卡车；若铺开在一英亩的土地上，它会形成不足一角硬币厚度的土层。
Selecting a layer with auto-select.
用自动选择工具选择图层。
Define and edit a layer on the publishing site.
在发布站点上定义并编辑一个层(layer)。
He touched his image, wiping away a layer of dust.
他触摸着它，抹去了上面的一层尘土。
Applications still want a layer of abstractions.
应用程序仍需要抽象层。
You can activate a layer by selecting it in the Layers view.
您可以在Layers视图中选择一个层来激活它。
The middle box toggles between locking and unlocking a layer.
中间框会在锁定和解锁一个层之间进行切换。
Copying a layer from one document to another by drag and drop.
用拖放的方式把一个图层从一个文件复制到另一个文件。
Doing so provides a layer of abstraction around the cached file.
这样可为缓存后的文件提供一个抽象层。
Select a layer from the Photoshop document you wish to copy from.
从文件中选择你要复制的图层。
Most data files consist of a single dataset, referred to as a layer.
大多数数据文件都包含一个单独的数据集，通常称为层。
Instead, it is a layer of fibres all pointing in the same direction.
相反，是一层同向的纤维。
In fact, it almost surely raises them by adding a layer of middlemen.
事实上，由于增加了一中介层，几乎可以肯定地说，医保费用会升高。
On top of that is a layer commonly called the game engine (or game server).
数据库层上面的一层常常称为游戏引擎(或游戏服务器)。
That was followed by a layer of plastic insulator, and another layer of gold.
然后在其上覆盖一层塑料绝缘膜，以及另一层黄金薄膜。
Smaolach had dug a hole deep enough to reach a layer of dry needles and cones.
斯茂拉赫已经掘了个洞，深度足以到达下层的针叶和球果。
The inclusion of such a layer involves an additional up front development cost.
包含这样一个层涉及了额外的早期开发成本。
You can also double-click on a layer to select all of the elements in the layer.
您还可以双击一个层以选择该层上的所有元素。
It is not really a layer on top of SWT, and it doesn't try to hide SWT from you.
它并不真的是SWT之上的层，而且它没有试图向您隐藏SWT。
Drill past 3, 000 metres of rock and you will hit a layer of salt 2, 140m thick.
钻探头穿过3000米厚的岩层将会触碰到2140米厚的盐层。
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