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。
- A new nuclear power station is on the stocks here. 这座新的核电站在建造之中。
- The couple seemed to be on cloud nine. 那对夫妇看上去极其幸福。
- This old man is a famous nuclear physicist. 这位老人是一位著名的核物理学家。
- The sun disappeared behind a cloud. 太阳消失在一片云后面。
- Plans for nuclear plants have been declassified. 建造核装备的计划已不再保密。
- 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。
- They decided to establish a nuclear power station. 他们决定修建一所核电站。
- The banks of dark cloud promised rain. 天上片片乌云，就要下雨了。
- Nuclear energy remains a double-headed creature. 核能依然是一种有利也有弊的能原。
- Nuclear physics is a closed book to me. 核物理学是我完全不懂的一门学科。
- Nuclear physics is a closed book to most of us. 我们大多数人对原子核物理学一窍不通。
- His area of concentration is nuclear physics. 他的专门研究范围是原子物理学。
- The sun disappeared from view behind a cloud. 太阳被云遮住看不见了。
- Thick cloud blotted out the view. 云层把风景遮住了。
- A cloud of locusts hit the farm. 大群蝗虫袭击了那个农场。
- The decision will only cloud the issue. 这一决定只能使这一问题变得复杂起来。
