基本解释adj.阴天的；阴暗的；愁闷的v.遮盖；（使）变暗；包边缝n.覆盖；阴天同根派生 英汉例句用作名词 (n.)Overcast mornings are the sure forerunners of steady rain.早晨阴天预示肯定下雨。The overcast sky creates beautiful silvery reflections in water.在阴天创造了美丽的银色反射在水中。