Epithelial tissue is the pseudostratified ciliated columnar epithelium, more Fabricius nodes are located in the natural layer.

黏膜上皮全部为假复层柱状上皮，黏膜的固有膜内腔上囊小结也相对发达。

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It’s crafted from natural cotton and recycled paper layer and it doesn’t use any chemical ink or adhesives that are tough to recycle.

它是由天然棉和可循环的纸质层精制而成，它没有使用任何难以回收再利用的化学油墨或是制剂。

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It's an 8 - to 12-inch layer of dirt impregnated with hydrogels, along with organic agents that nourish the natural bacteria in the soil.

它是一个由8 - 12英寸的一个充满水凝胶的泥土层，还有可以培养土壤中自然菌的有机处理剂。

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After the dunes are reshaped, the topsoil is spread over the bare sand in a thin layer, triggering the natural processes that facilitate the recovery of the dunes.

CNN: South Africa dune mining whips up sandstorm

You should also see a very faint white layer of mannite, a natural powder that is a carbohydrate and source of sweetness.

WSJ: Kelp Wanted

While a single wind-turbine does not affect the global atmosphere, the installation of a large number of such devices will interfere with the atmospheric circulation and diminish the extraction efficiency on the large scale, since any extraction of momentum will act in competition with natural wind-power energy dissipation by turbulence in the boundary layer.

FORBES: Researchers Warn Of Climatic Consequences To Harvesting Wind Energy On Mass Scale