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。
- When he was nine, on 26 April 1986 a nuclear reactor at Chernobyl exploded, spewing a vast radioactive cloud into the skies. 当他9岁时，1986年4月26日，切尔诺贝利的一个核反应堆爆炸了，向天空喷发了一个巨大的辐射云。
- Radioactive ray is material thing. 放射线是实际的物质。
- A cloud is a condensation of water vapour. 云是由水蒸汽凝缩而成的。
- Andriy was just nine when the Chernobyl nuclear reactor in the Ukraine suffered a catastrophic accident, sending a radioactive cloud over a huge part of Europe. 当苏联的核反应堆泄漏危及乌克兰，造成整个欧洲头顶的核乌云时，舍瓦只有9岁。
- 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。
- A new nuclear power station is on the stocks here. 这座新的核电站在建造之中。
- The sun disappeared behind a cloud. 太阳消失在一片云后面。
- Radium and uranium are radioactive elements. 镭和铀是放射性元素。
- This old man is a famous nuclear physicist. 这位老人是一位著名的核物理学家。
- 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。
- Plans for nuclear plants have been declassified. 建造核装备的计划已不再保密。
- The banks of dark cloud promised rain. 天上片片乌云，就要下雨了。
- They decided to establish a nuclear power station. 他们决定修建一所核电站。
- 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。
- The sun disappeared from view behind a cloud. 太阳被云遮住看不见了。
- 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。
