The ships had been sailing in the thick fog for twelve days.

VOA: special.2010.07.14

And what I want to read to you is this passage on page 7: I was lost in a fog of fear.

我想给大家,念一下第七页：,“我在充满恐惧的迷雾中迷失。

耶鲁公开课 - 1945年后的美国小说课程节选

Flying in fog is very dangerous.

VOA: special.2009.03.18

And for all Thursday's celebrations - big and small the skies in Beijing were clear and blue, a striking departure from the heavy fog of a day earlier.

VOA: standard.2009.10.01