Development of EJB components has become more complex with each subsequent release of EJB specifications, but with the release of EJB 3.0, things have changed dramatically.

随着不断发布的EJB规范，EJB组件的开发变得越来越复杂，但是对于发行版e JB 3.0，情况却发生了很大的变化。

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Many sophisticated reusable components implement a complex command language of their own.

很多优秀的可重用组件都实现了自己的一种复杂的命令语言。

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The creation of wrapper-facades for these components hid the details of complex interactions between the legacy components, and also provided an abstraction that protected new code from legacy code.

为这些组件创建包装外观，会隐藏遗留组件间复杂的交互细节，并提供了一个抽象，使新旧代码不致混淆。

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The lesson of all of this is that by taking apart the components of a complex problem and making each part simpler and easier, you can help people create sequences of actions that will build new habits and defeat old one.

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It has thrived on the outsourcing by car firms of complex components and on the burgeoning demand for four-wheel-drive transmissions.

ECONOMIST: GKN and aerospace

This conversion process creates a complex system of multiple components held to tight tolerances making manufacturing more challenging.

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