1. Tired of shuttlecock the document for signature, the secretary decide to call in all the signer. 厌倦了为签字而将文件往返递送，秘书决定将所有的签字人叫来。
2. Moreover, a proxy signer must cooperate with the SEM to generate a valid proxy signature, which makes the new scheme have an effective and fast proxy revocation. 新方案不仅满足代理签名的所有安全要求，而且代理签名人只有与SEM合作才能生成有效的签名，使得方案具有快速撤销的功。
3. Proxy signatures are very useful tools with which a potential signer can delegate his signing power to a proxy signer who signs a message on behalf of the original signer. 代理签名是一种非常有用的密码学工具，使用它，原始签名人能将其数字签名权力委托给代理签名人。
英英解释
n.
1. someone who can use sign language to communicate
2. someone who signs and is bound by a document
