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- The falling speed of cloud droplets is small and falling cloud droplets are not very effective in scavenging smaller particles. 云滴下落速度不大,下降的云滴对清除较小粒子并不十分有效。
- 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。
- He has a knack of falling out with everyone. 他有个怪癖，总是和每个人吵架。
- 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。
- She was hit by a piece of falling masonry. 她被建筑物上落下的一块石头砸着了。
- 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。
- The captain upbraid his men for falling asleep. 上尉因他的部下睡着了而斥责他们。
- He was on cloud nine after winning the competition. 他在比赛获胜後欣喜若狂。
- The banks of dark cloud promised rain. 天上片片乌云，就要下雨了。
- Laid-off workers fall into penury. 下岗职工陷入贫困。
- The falling slate sliced into his arm. 落下来的一块石片划破了他的手臂。
- The sun disappeared from view behind a cloud. 太阳被云遮住看不见了。
- The malformation of his knee is caused by a fall. 他膝盖的畸形是由摔了一跤造成的。
- He is hit by a falling tree and killed on the spot. 一棵树倒下来，把他当场砸死了。
- Thick cloud blotted out the view. 云层把风景遮住了。
- The toddler tried to walk but kept falling down. 那小孩学著走路但老是跌跤。
- A cloud of locusts hit the farm. 大群蝗虫袭击了那个农场。
