freeze over

US /friːz ˈoʊ.vər/
UK /friːz ˈoʊ.vər/
"freeze over" picture
1.

結冰, 凍結

if a body of water freezes over, it becomes covered with ice

:
The pond froze over completely during the cold snap.
寒潮期間,池塘完全結冰了
We can go ice skating once the lake freezes over.
湖面結冰後,我們就可以去滑冰了。