科学 · 太空系统与地球历史 · 5
您的孩子在 5 岁左右正在学习科学中的太空系统与地球历史内容，并逐步掌握相关知识与技能。
Your child is discovering how daylight changes throughout the year by observing that days are longer in summer and shorter in winter.
您的孩子在 5 岁左右正在学习科学中的太空系统与地球历史内容，并逐步掌握相关知识与技能。
Your child is discovering how daylight changes throughout the year by observing that days are longer in summer and shorter in winter.