sender

n.

寄件人；[信]发报机，发射机，发送机，送话器；发送人；（天线）引向器

复数：senders

1. Do not forward mails without permissinon of sender.
   未经寄件人许可，不要将邮件转寄他人。
2. If a recipient is not found the mail is returned to the sender.
   如果没有找到接收者，那么邮件被返回发件人。

The dining cryptographers problem: Unconditional sender and recipient untraceability
The dining cryptographers problem: unconditional sender and recipient untraceability
A comparison of sender-initiated and receiver-initiated reliable multicast protocols
A Delay Analysis of Sender-Initiated and Receiver-Initiated Reliable Multicast Protocols
A Delay Analysis of Sender-Initiated and Receiver-Initiated Reliable Multicast Protocols
Sender-Based Message Logging
Distributed System Fault Tolerance Using Sender-Based Message Logging
Sender Authentication Scheme between the Proxy Server and UAS for VoIP Spam
Efficacy and authority of the message sender during emergency evacuations: a mixed methods study
Population-Based Survey of Urinary Incontinence, Overactive Bladder, and Other Lower Urinary Tract Symptoms in Five Countries: Resul...