This ensures a uniform color background for each slice where it is filling in the holes from higher layers.

这将确保从较高图层填充缺口的每一块的颜色背景都是统一的。

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In the layered system, higher layers, such as application, can depend on any lower layer, such as util.

在分层系统中，上层(比如application)可以依赖于其下任何一层(比如util)。

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The main purpose of the layering principle is for lower layers to be unaware of the higher layers they are serving.

分层原则的主要目的是让较低层不知道其所服务的较高层的情况。

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Now Guido Risaliti of the Harvard-Smithsonian Center for Astrophysics and colleagues have looked at markedly higher energies - less subject to absorption in those gas layers - using Europe's XMM-Newton telescope and the recently launched Nustar telescope.

BBC: First glimpse of a black hole's spin

As a result of multiple layers of managers, the fees related to manager-of-manager programs are higher than hiring the underlying managers directly.

FORBES: The Politics of Minority or Emerging Manager Programs (August 2, 2004 )