| 释义 | 
		 alto·cumu·lusBrE /ˌæltəʊˈkjuːmjʊləs/NAmE /ˌæltoʊˈkjuːmjʊləs/ noun [U, C]  (alto·cumu·li BrE /ˌæltəʊˈkjuːmjʊlaɪ/  NAmE /ˌæltoʊˈkjuːmjʊlaɪ/  BrE /ˌæltəʊˈkjuːmjʊliː/  NAmE /ˌæltoʊˈkjuːmjʊliː/ )  (specialist) a layer of round clouds with flat bottoms lying at medium height, or one of the clouds which form this layer 高积云 |