告知收货人或代理货物到达信息。

Notify consignee or agent of arrival of shipments.

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数字签名可用于任何类型的信息，无论加密与否，接收者能够确定发送者的身份和到达信息的完整性。

A digital signature can be used with any kind of message, whether it is encrypted or not, simply so that the receiver can be sure of the sender's identity and that the message arrived intact.

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在互联网的帮助下，信息可以迅速到达世界的每一个角落。

With the help of the Internet, information can reach every comer of the world quickly.

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