神经网络通常由三层单元(节点)或人工神经元组成。

A neural network is usually comprised by three layers of units (nodal points) or artificial neurons.

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此外，垂直语言单元按级别组织成三层，通过在那些可用的层上增加建模能力可以形成相互连续的更高层。

Furthermore, the vertical language units are hierarchically organized into up to three levels, with each successive level adding more modeling capabilities to those available in the levels below.

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非常大的部署可能对每个业务单元增加第三层级的 ESB，以便将服务请求中转到该单元。

Very large deployments might add a third hierarchical-level ESB per business unit to mediate service requests local to that unit.

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