Kangaroo Cup by a little girl
本文作者： 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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