The next layer, called the transport layer, is responsible for peer-to-peer communication (for example, within a host).

再上一层称为传输层，负责端到端的通信（例如，在一台主机内部）。

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Peer-to-peer systems are often implemented as an abstract overlay network built at the application layer on top of the native or physical network.

对等系统常常实现为一个抽象的覆盖网络，构建于原生或物理网络之上的应用程序层上。

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In the layered systems the service data sent to the given layer by the user is sent peer-to-peer to the users in the service layer without changing the lexeme.

在划分层的系统中，用户发送的给定层的服务数据，被保持语义不变的发送给对等的服务层用户。

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But whereas many workplaces are now seeing a social layer being applied, this peer community has requested a professional counselling layer.

FORBES: Social Business and the Future of Psychological Well-Being Programs