The sky is cloudy, and looks like rain.
天空陰沉沉的，像是要下雨。
The room became cloudy with a blue haze of smoke.
藍幽幽的煙使房間霧氣騰騰。
This is a cup of cloudy water.
這是一杯混濁的水。
The weather is now clear, now cloudy.
天氣一會兒晴一會兒陰。
The lime water has turned cloudy, therefore carbon dioxide has been produced during the experiment.
石灰水變得混濁了，可見在實驗中有二氧化碳生成了。