| 摘要 |
An infant drinking cup is described. The infant drinking cup is a first colo r when at room temperature. When the cup is filled with a cold beverage, the portion o f the cup below the fill line changes to a second color. When handled by an infant, those areas below the fill line in contact with the infant's warm hands change color back to the first color. The process is fully reversible, such that the infant drinking cup can change fr om the cold color to the warm color, and vice versa, repeatedly.
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