mass nounBrE/ˈmæs naʊn/NAmE/ˈmæs naʊn/noun (grammar语法) anuncountablenoun不可数名词anounthatisusuallyuncountablebutcanbemadepluralorusedwithaoranwhenyouaretalkingaboutdifferenttypesofsth. Forexample, breadisusedasamassnounintheshopsellsseveraldifferentbreads物质名词(通常为不可数,但表示不同种类时可用复数或与 a 或 an 连用,例如 The shop sells several different breads 中的 bread)