What does "fog" mean?

Fog, pronunciation: [wi]

Song Chaobuzhi's poem "The Naive Text of Water Leaving Home" says: "When you are always afraid of returning, you will see things and people will be far away from the sun. Looking at the area around the Weihe River, I am sad and foggy, and my soul is scattered. " Chapter 17 of Yang Mo's Song of Youth: "At dawn, misty fog enveloped the lush acacia trees along the North River, so the morning in Beijing was still immersed in hazy fog." Guo Xiaochuan's Song of the Sea: "In the distance, it is Xia Yun; Nearby, it is fog. "

Make sentences:

1, the hill is like a sharp knife, with a few wisps of milky fog, in which a slender line is faintly visible.

2. A gentle mist rises by the river, and the mountains are covered with a soft milky white. The color of white fog makes everything hazy and psychedelic.