mattress

详细解释:n. 床垫, 空气垫, 沉床
【医】 褥子, 床垫

英语解释：

名词 mattress:

a large thick pad filled with resilient material and often incorporating coiled springs, used as a bed or part of a bed

例句：

A narrow, hard bed or straw-filled mattress.草垫一种窄的硬床或装满草的垫子