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人们除语言外,最早使用的通信手段是以书信作为信息载体的邮政,因此,无论是过去或将来,以载有信息的实物(纸张和其他记录
In addition to language, the earliest communication means people use postal letters as postal carrier of information, so whether in the past or in the future, with the physical (paper and other records