If you use XML for data exchange in the message body, best practices recommend that you perform XML Schema (XSD) validation to ensure that the sender and receiver speak the same language.

如果您在消息体中使用XML进行数据交换，最佳实践建议您执行XML Schema (XSD)验证，以确保发送器和接收器使用相同的语言。

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This tells the receiver how to parse the contents of the message body.

这是告诉接收器如何解析消息体的内容。

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The note has a header and a message body. It also has sender and receiver information.

这段文档有个首部和信息的主体~，它同时也有发送者和接受者的信息。

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What if a defender leads with his shoulder, then, say, a wide receiver twists his body, thus causing helmet-to-helmet contact?

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So far those pieces have included high capacity ammunition magazines for AR-15s and AK-47s, as well as an AR lower receiver, the body of that semi-automatic rifle to which off-the-shelf components like a stock and barrel can be attached.

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The lower receiver is the regulated body of the gun.

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