First, similar to system calls that bridge user-space applications with kernel functions, a hypercall layer is commonly available that allows guests to make requests of the host operating system.

首先，类似于将用户空间应用程序和内核函数连接起来的系统调用，一个通常可用的虚拟化调用(hapercall, hypervisor对操作系统进行的系统调用)层允许来宾系统向宿主操作系统发出请求。

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Many leaves have fallen Zigzag Bridge body, such as a layer of quilt.

许多叶子都落在九曲桥身上，像是一层被子。

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Based on the construction experience of many years, the paper analyses the factors influencing the concrete paving layer of bridge floor and presents the effective methods to control its quality.

深入分析了对桥面砼铺装层影响因素的作用机理，并在总结多年施工经验的基础上，提出了对其质量进行控制的有效方法。

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When I got there I had to stop, because the bridge was filled with people, terrified people, their suits and briefcases covered in a thick layer of white soot.

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