Definition: thick cloud just above the ground or sea that makes it difficult to see Level: A2
浓雾笼罩着山谷。
Thick ___fog covers the valley.
今天早上有雾，开车要小心。
There is ___fog this morning, so drive carefully.
雾散了，太阳出来了。
The ___fog has cleared and the sun is out.
