Visibility was down to about 100 metres in the fog.

雾中的能见距离降到了大约100米。

《牛津词典》

They were going to set off in the fog, but were dissuaded.

他们原打算在雾中出发，但被劝阻了。

《牛津词典》

The mountaineers found it hard to orient themselves in the fog.

登山者在大雾中很难辨认方向。

《牛津词典》

The color also is easier to see in the heavy fog that often covers the area.

VOA: special.2010.07.23

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

VOA: special.2010.07.14

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

And maybe while he was wandering alone in the fog she had arrived home?

NEWYORKER: Waiting

If discerning American plans is tricky in the fog of disinformation, divining Mr Hussein's intentions is impossible.

ECONOMIST: The coming war

You can get lost in the fog of mediocrity and ideals built upon assumptions that lead to predetermined conclusions.

FORBES: gyroVoice: The Most Important Brand Strategy Question: What Would You Ask Elvis?