Ce programme explore la science amusante de la vie quotidienne, répond à des questions intéressantes et éveille chez les enfants l'amour de la connaissance et l'envie d'apprendre.
为什么南极是世界上最冷的地方
E1 • 2 mins • Jan 15, 2019
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- 135Increased by 5
- 199Decreased by 4
- 36Increased by 0
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