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Kangaroo Cup by a little girl

作者：21ST

小女孩为生病爷爷发明不洒水的杯子

A cup with hot water spills (溅出). Ouch! It hurts1! What can we do with this kind of problem? Lily Born has a good idea. She invented a special kind of cup. She is just 11 years old from the US. Her cup doesn’t spill.

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