Tonight will be cloudy.

　　今天夜間多云。

　　The legal position is very cloudy.

　　法律對此的態度十分模糊。

　　It was cloudy yesterday.

　　昨天是陰天。

　　Men are subject to sudden changes of fortune as the moon is subject to the changes of being full and crescent, cloudy and clear.

　　人有旦夕禍福，月有陰晴圓缺。

　　The sky is cloudy, and looks like rain.

　　天空陰沉沉的，像是要下雨。