cloud over
US /klaʊd ˈoʊvər/
UK /klaʊd ˈoʊvər/

1.
tối sầm lại, u ám
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.
Mặt cô ấy tối sầm lại khi nghe tin xấu.
•
His expression clouded over as he considered the implications.
Vẻ mặt anh ấy tối sầm lại khi anh ấy cân nhắc những hàm ý.
2.
u ám, có mây
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.
Bầu trời bắt đầu u ám, đe dọa mưa.
•
It was a beautiful morning, but by afternoon, it had clouded over.
Đó là một buổi sáng đẹp trời, nhưng đến chiều thì trời đã u ám.