传统软件开发人员通常构建应用程序中的一个模块，或典型的三层体系结构中的单个层的一部分。

Traditional software developers generally build either a module within an application or a portion of a single layer in typical three-tier architecture.

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可以将这一系统看作一个三层体系结构，由接口层(Interface Layer)、实现层(Implementation Layer)和传输层(Transport Layer)组成。

This system can be viewed as a 3-tiered architecture, consisting of the Interface Layer, Implementation Layer and Transport Layer.

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因此，换一个角度来看，三层体系结构可能是另一副样子，尤其是在涉及不同的工具集时。

Therefore one 3-tier architecture may look different from another, especially when different toolsets are involved.

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