The RPC address and other binding data structure's field values like the protocol version, timeout are all retrieved from this input binding handle and copied into another handle representation.

从这个输入绑定句柄获取RPC地址和绑定数据结构的其他字段值，比如协议版本、超时等，把它们复制到另一个句柄表示中。

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In SQL data binding, though, this attribute lets Castor know the field that uniquely defines an object; in this case, that's the id field of an author.

但是在SQL数据绑定中，该属性让Castor知道哪个字段惟一定义了一个对象；该例中是作者的id字段。

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When authoring a Data Binding the message headers were passed into the read or write method, allowing transformation logic to be determined by a field in the protocol header.

当创作数据绑定时，会将消息标头传入读或写方法，并允许协议标头中的字段确定转换逻辑。

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