mass1/mæs; mæs/n 1 [C usually singular 一般用单数] a large amount or number of something all together 大片﹐大团﹐大块: a great/solid/dense etc mass (of sth) a dense mass of forest 一大片密林a seething mass of people 摩肩接踵的人see box at见 GROUP1 方框2 masses (of sth) BrE informal a lot of something【英,非正式】大量(某物)﹐许多(某物): I’ve got masses of homework. 我有很多家庭作业。3 the masses all the ordinary people in a society 平民﹔群众4 also 又作 Mass [C,U] the main religious ceremony in the Roman Catholic Church and some other Christian churches 弥撒5 [U] technical the amount of material in something – used in physics【术语】〔物理学上的〕质量: +of the mass of the sun 太阳的质量
mass2adj involving a large number of people 许多人的﹐大众的: mass communication 大众传播weapons of mass destruction 大规模杀伤性武器
mass3v [I,T] to come together, or to make people or things come together, in a large group(使)集结﹐(使)聚集: Troops are massing at the border. 军队正在边境集结。