The sky is cloudy, and looks like rain.
天空阴沉沉的，像是要下雨。
The room became cloudy with a blue haze of smoke.
蓝幽幽的烟使房间雾气腾腾。
This is a cup of cloudy water.
这是一杯混浊的水。
The weather is now clear, now cloudy.
天气一会儿晴一会儿阴。
The lime water has turned cloudy, therefore carbon dioxide has been produced during the experiment.
石灰水变得混浊了，可见在实验中有二氧化碳生成了。