n.床垫；褥垫；空气垫；[建]沉排 变形： 复数：mattresses 双语释义：n.(名词)[C]褥垫，床垫 a rectangular pad of wool,cotton,etc.,to put on a bed for sleeping英英释义： mattress[ 'mætris ]n.a large thick pad filled with resilient material and often incorporating coiled springs, used as a bed or