柯林斯词典cumulus /ˈkjuːmjʊləs/ (cumuli/ˈkjuːmjʊlaɪ/) 1. N-VAR Cumulus is a type of thick white cloud formed when hot air rises very quickly. 積雲 ...huge cumulus clouds. ...巨大的積雲。 返回 cumulus剑桥词典a type of tall , white cloud with a wide , flat base and rounded shape 積雲 比較cirrus nimbus stratus 返回 cumulus