cloud over

US /klaʊd ˈoʊvər/
UK /klaʊd ˈoʊvər/
"cloud over" picture
1.

rannuvolarsi, incupirsi

If a person's face clouds over, it shows that they are sad or angry.

:
Her face clouded over when she heard the bad news.
Il suo viso si rannuvolò quando sentì la brutta notizia.
His expression clouded over as he considered the implications.
La sua espressione si rannuvolò mentre considerava le implicazioni.
2.

rannuvolarsi, annuvolarsi

If the sky or the weather clouds over, it becomes covered with clouds and looks as if it is going to rain.

:
The sky began to cloud over, threatening rain.
Il cielo cominciò a rannuvolarsi, minacciando pioggia.
It was a beautiful morning, but by afternoon, it had clouded over.
Era una bella mattinata, ma nel pomeriggio si era rannuvolato.