指通过邮政企业寄递的信件、印刷品、邮包、汇款通知、报刊等。信件：指信函和明信片。

Postal materials refer to mail, printed matter, postal parcels, money orders, newspapers, periodicals, etc., posted and delivered by postal enterprises. mail refers to letters and postcards.

youdao

指通过邮政企业寄递的信件、印刷品、邮包、汇款通知、报刊等。信件：指信函和明信片。

Postal materials refer to mail, printed matter, postal parcels, money orders, newspapers, periodicals, etc., posted and delivered by postal enterprises. mail refers to letters and postcards.

youdao