单词	mattress
释义	mattressmattress /ˈmætrɪs/ ●●○ noun [countable] Etymology ETYMOLOGYmattress Origin: 1200-1300 Old French materas, from Arabic matrah place where something is thrown Collocations COLLOCATIONS► firm mattress  a good firm mattress the soft part of a bed that you lie on:  a good firm mattress [Origin: 1200–1300 Old French materas, from Arabic matrah place where something is thrown]
随便看	thiamin thick thicken thickener thicket thick-headed thickly thickness thickset thick-skinned thief thievery thieving thievish thigh thighbone thigmotropism thimble thimbleful Thimpu thin thine thing thingamajig think

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