In addition to abstracting the details of file operations from the underlying file systems, VFS ties the underlying block devices to the available file systems.

除了从底层文件系统抽象文件操作的细节之外，VFS还将底层块设备绑定到可用的文件系统。

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Investigation shows that the scheme is provable security under the blockwise adaptive attack model if the underlying block cipher is a pseudorandom permutation.

结果表明，在所用分组密码是伪随机置换的条件下，方案在分块适应性攻击模型下是可证明安全的。

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I used a composite material consisting of the underlying block-work and a rendered cement finish controlled with a mask and finally a dirt map for added wear along the objects edges.

我使用了复合的材料纹理——底层为砌块纹理，上层为渲染后混凝土效果图，通过mask进行控制，最后使用一个污垢贴图覆盖在物体的边缘。

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Access to stimulating activities appeared to block the harmful effects of oligomers on the cellular mechanisms underlying learning and memory, called long-term potentiation (LTP), researchers said.

WSJ: Why Young Children Don't Notice Coming Cars