cloud/cloudy

cloud /klaud/ n.［c］&［u］ 1.云彩，云朵：dense cloud 浓云；cloud computing云计算 The clouds soon cleared away and it became quite warm.一会儿云开雾散，天气变得相当暖和。2. 一大群，一缕等：a cloud of dust 一灰层；clouds of smoke 缕缕烟；a cloud of flies (mosquitoes, insects…)一大群苍蝇(蚊子，昆虫…) 3. (引申义)阴影：The sad news of her father’s death was the only cloud on an otherwise happy year. 在本应很幸福的一年,她父亲去世的不幸消息是惟一的阴影。

cloudless adj.明净无云的

cloudy /ˈklaudi/ adj. 1.多云的，阴天的：It was cloudy this morning, but it turned out fine.今天上午天阴，后来又放晴了。2. 模糊不清的：The reason for her anger is rather cloudy. 她生气的原因不清楚。