名词
中文翻译：床垫
同义词：
['mat', 'cushion', 'pad']
例句：
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1.He laid his humpy on the floor and started to work on his project.
他铺开他的床垫开始工作。
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2.The old man sat on his humpy with a book in his lap.
老人坐在他的床垫上，手里拿着一本书。
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3. The baby was sleeping soundly on her humpy.
宝宝在她的床垫上睡得安稳。