accumulate/əˋkjumjə͵let; əˈkjuːmjəleIt or əˈkjuːmjʊleIt/v [I,T] to gradually increase in amount, or to make the amount of something gradually increase 积累﹔积聚: Dirt and dust had accumulated in the corners of the room. 房间的角落里积满了污物和灰尘。accumulate money/knowledge/wealth etc He had accumulated over £300,000. 他已经积攒了三十多万英镑。 —accumulation /ə͵kjumjəˋleʃən; əˌkjuːmjəˈleIʃ$n or əˌkjuːmjʊˈleIʃ$n/n [C,U]