freeze over

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

结冰, 冻结

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

:
The pond froze over completely during the cold snap.
寒潮期间,池塘完全结冰了
We can go ice skating once the lake freezes over.
湖面结冰后,我们就可以去滑冰了。