So he fills in his information, and then after that, all he has to do is click "send," and just like that, without understanding cryptography, and without doing anything different from how he writes email today, Bob has just sent an encrypted message.
他输入邮件信息， 然后点击“发送”， 就像这样，无需任何密码学知识， 就跟平时写电邮一样， Bob发送了一封加密的电邮。