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為什麼跌倒或是撞到會瘀青
Season 25
Episode 4
Published 9 months, 1 week ago
Description
哈囉~小朋友們!我是小艾姊姊!
你們有沒有想過,為什麼跌倒或是撞到會瘀青呢?
讓小艾姊姊來給你回答