In the example above, the time to setup the sender, does not depend on the number of items.

在上面的实例中，设置发送器的时间不依赖于条目的数量。

youdao

Basically, the sender will send a text message containing the number of the package that was delivered.

发送者主要将发送一个约束传递包的数量的文本消息。

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When the congestion window on the sender is growing, it effectively doubles the number of packets in flight during the time it takes to send a packet and receive the acknowledgment back.

当发送方的拥塞窗口增大时，它会在发送出一个包和收到应答之间的时间内成倍地增加传输中的包的数目。

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If a reply is sent, the number becomes more valuable because the sender knows it is genuine.

BBC: Ministers urged to tackle nuisance texts and cold calls

If you ask me, I think Elvis said it best about such messages: Return to sender, address unknown, no such number, no such zone.

FORBES: Elvis Presley Had It Right When It Came To Insider Trading