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第四種郵便物
fourth-class mailnoun
は、
topic markergrammar
通信教育
correspondence education; distance learningnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
教材
teaching materials; educational resourcesnoun
など
and so on; such asgrammar
に
direction, time, indirect object, or target markergrammar
利用
use; utilization; applicationnoun, suru verb
される。
passive, potential, or respect auxiliarygrammar