snail mail
Longman Dictionary of Contemporary English 5++LDOCE 5++ˈsnail mail noun [uncountable] TCMthe system of sending letters by post, as opposed to using email – used humorously 蜗牛邮件，普通邮件〔相对于电子邮件而言，幽默用法〕From Longman Business Dictionarysnail mailˈsnail mail informal mail sent through the normal mail service, rather than messages sent by email → mail
ˈsnail mail nounChineseSyllable
by letters opposed Business the to post, of as sending system
snail mail
ˈsnail mail
noun [uncountable]
the system of sending letters by post, as opposed to using email – used humorously
ˈsnail mail
noun [uncountable]the system of sending letters by post, as opposed to using email – used humorously