The underlying network architecture can be divided into three layers (Device layer, Transport layer, and Control layer) plus the service layer and will be introduced from bottom to top respectively.

基础网络体系结构可分为三个层次(设备层、传输层和控制层)，其上还有服务层，我们将按照从下向上的顺序分别进行介绍。

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It is not really a layer on top of SWT, and it doesn't try to hide SWT from you.

它并不真的是SWT之上的层，而且它没有试图向您隐藏SWT。

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This will layer the changes from the template on top of whatever code the project already contains.

这样无论项目的代码如何，我们都可以根据模板将改变划分开来。

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Internally within the Welsh Government, any realistic candidate would have to come from within the top layer of management, the Director Generals.

BBC: The hunt for a new 'Sir Humphrey'

In many cases what people are looking for is boring factual information that resides far away from the top populist layer of the internet.

FORBES: The Rise of the Knowledge Market

To change from a one to a zero, the microprocessor sends electrical currents to change the polarity of the top layer.

FORBES: Total Recall