As for spam, ISPs (including mail service providers) could limit their users to, say, 100 e-mails a day; for more, you have to pay or at least post a security bond, or pass some good behavior test.
对于垃圾邮件，网络服务商(包括邮件服务商)应该对用户有所限制，比如说每天只能发一百封邮件，更进一步说，你得付费，或至少发布安全债券，或通过一个好的行为测试才行。
'Snail mail' is the traditional letter delivering service in which you have a postman and a post box.
所谓的“蜗牛邮件”就是传统的邮寄信件，没有邮递员也没有邮箱。
At present, China Post and International Express Mail service has established business relationship with more than 200 countries and regions in the world.
目前，中国邮政国际特快专递业务已与世界上200多个国家和地区建立了业务关系。
At present, China Post and International Express Mail service has established business relationship with more than 200 countries and regions in the world.
目前，中国邮政国际特快专递业务已与世界上200多个国家和地区建立了业务关系。
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