Article
人的壽命與無管腺 - Human lifespan

Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: general knowledge, science,

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Article
傳染傷風的媒介物 - Mediums that transmit colds

Subject matters: 新聞 - news, 新知 - new knowledge,
Language level: Baihua

Keywords: health, general knowledge,

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