Article
兒童的齒牙衛生 - Dental Hygiene of children

Column title: 兒童 - Children
Subject matters: 文章 - essay,
Language level: Baihua

Keywords: health, children, hygiene,

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Article
呢絨清潔 - about cleaning the woolen cloth

Column title: - no column name
Subject matters: 文章 - essay,
Language level: Wenyan

Keywords: Family life/routine, hygiene,

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