- 问题详情: Parentsusuallygotomallstofindnewschoolsuppliesfortheirchildren.Oneofthemostimportantthingstogetduringthistimeisthebackpack.Moststudentschoosetobringabackpackbecauseitallowsthemtohavebothhandsfree.Thismakesthebaglesslikelytohinder(妨碍)oth...
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