If the sky clouds over , it becomes covered with clouds.
After a fine day, the sky had clouded over and suddenly rain lashed against the windows.
PHRASAL VERB : V P
see also cloud 5
If the sky clouds over , it becomes covered with clouds.
After a fine day, the sky had clouded over and suddenly rain lashed against the windows.
PHRASAL VERB : V P
see also cloud 5
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006