您要查找的是不是：
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A cloud is a condensation of water vapour. 云是由水蒸汽凝缩而成的。
- There are several kinds of cloud formations. 云层的构成方式有好几种。
- The couple seemed to be on cloud nine. 那对夫妇看上去极其幸福。
- The doctor was very thorough in his examination of the sick child. 医生对生病的孩子进行了仔细的检查。
- The sun disappeared behind a cloud. 太阳消失在一片云后面。
- The wind dispersed the cloud from the sky. 风吹散了天上的云。
- He was on cloud nine after winning the competition. 他在比赛获胜後欣喜若狂。
- He was bewailing his failure in the examination. 他为考试不及格而悲伤。
- The banks of dark cloud promised rain. 天上片片乌云，就要下雨了。
- Jerry left the examination room with a light heart. 杰利轻松愉快地离开了考场。
- He was very sick at failing in the examination. 他对于考试不及格觉得很沮丧。
- The sun disappeared from view behind a cloud. 太阳被云遮住看不见了。
- He passed the examination with flying colors. 他考试中取得了优异成绩。
- He's het up about the examination. 他为考试而焦虑不安。
- Thick cloud blotted out the view. 云层把风景遮住了。
- This work will hardly stand close examination. 这种作品很难经得起认真的检验。
- A cloud of locusts hit the farm. 大群蝗虫袭击了那个农场。
- He will take an oral examination. 他将接受口试。
- The decision will only cloud the issue. 这一决定只能使这一问题变得复杂起来。
