For this simple example, I deploy collaborating handlers that sign outgoing messages by placing a signature in the header and verify that the signature on incoming messages is correct.

对于这个简单的示例，我部署了一些协作的处理程序，这些处理程序通过将签名放入消息头来签署传出消息，并且验证传入消息中的签名是否正确。

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It's become my visual handle and it's also a signature and a sign of authenticity.

这已经成为我的视觉头衔，是一个签名以及真实性的标志。

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Sign adds a signature to verify the sender's identity.

sign添加签名，以验证发送方的身份。

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The accident followed a fatal high-speed railway crash last July that called into question the pace and quality of China's high-speed-rail buildout, which officials had touted as a signature program and a sign of the nation's rising technological might.

WSJ: Chinese High-Speed Rail Section Collapses

Available immediately, Adobe Reader X (version 10.1.3) for desktop offers new signature functionality with Adobe EchoSign that lets users choose how they want to electronically sign a document, either by drawing their signature or by adding a typed or cursive signature.

ENGADGET: Adobe Mobile Reader 10.2 adds signature, form support

The seal was originally used as a signature or sign of authority, but it came to be used by all social classes and in much of Asia.

UNESCO: Culture