The status line is another optional component of an application window.

状态行是应用程序窗口的另一个可选组件。

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On top of that, we introduced the new Codan static analysis framework as optional component to provide semantic error reports ahead of compile time.

在此基础之上，我们引入新的Codan静态分析框架作为可选组件，在编译之前提供语义错误报告。

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Despite the simplicity of the basic SOAP wrapper, it offers the potential for unlimited extensions by using an optional component called the header.

尽管基本的SOAP包装非常简单，但是通过使用称为Header的可选组件，它提供了不受限制的扩展能力。

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Weighing in at less than 9 ounces, it can control a component from as far away as 33 feet, and with an optional radio frequency receiver, it can control components in more than one room from farther away.

FORBES: True Remote Control