14 年前
视频简介
A retired piano tuner from London attempts to deliver a 100-year old piano to a remote Himalayan school, situated in one of the most isolated settlements in the world. If successful, it will be the highest piano delivery in history.。知识动画《宝宝巴士数学小课堂》，通过情景模拟、图形事物和趣味游戏，帮助宝宝直观的认知数字，启蒙数学。。
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抗日
