摩天大楼的地板和天花板是分段建造的，每一段有15层。

The floors and ceilings of the skyscrapers are built in sections, each measuring 15.

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一颗恒星其生命的绝大部分处于主序星阶段，在这一阶段它包含一个核心、辐射区和对流区、光球层、色球层和日冕。

A star during most of its life is a main-sequence star, which consists of a core, radiative and convective zones, a photosphere, a chromosphere and a corona.

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光栅数据的层通常称为段，而术语层仍然用于光栅和矢量数据。

Layers of raster data are more often called bands, although the term layer still applies to raster as well as vector data.

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Now, as an aside, there's another couple of layers at the very top above the stack and above the heap, but below the tech segment and those are called initialized data and uninitialized data.

题外话，在堆和栈的顶端,还有好几层，但是在技术段之下,他们被叫做初始化数据和未初始化数据。

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