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。
Wherever these particles settled, they formed a pan, a layer that water couldn't penetrate.
不管这些粒子沉降在哪里，它们会形成一个平面板块，一层水无法渗透的平面。
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。
Leatherbacks do not have blubber, but they do have a reptilian equivalent: thick, oil-saturated skin, with a layer of fibrous, fatty tissue just beneath it.
棱皮龟没有鲸脂，但它们有和爬行类动物相似的结构：厚且含油的皮肤，下面有一层纤维，再下面是脂肪组织。
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。
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。
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。
After the wind, there was a layer of dust on the desk.
大风过后，桌上落了一层灰。
First, you want to add a layer.
首先，需要添加一个层。
Put a layer of the stuffing on top.
放一层馅料在上面。
Selecting a layer with auto-select.
用自动选择工具选择图层。
A layer mask is like a light cast onto a layer.
每一层是像一盏灯投到上一层。
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。
A layer mask can give individual pixels different opacities.
每一层能够给每个像素的不同的透明。
Mutual capacitance: A layer of driving lines carries current.
互电容 ：一层含有电流的驱动线路。
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。
Everyone has a layer of bacteria on their teeth called plaque.
每个人的牙齿中都有一层叫做噬菌斑的细菌。
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。
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。
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