The primary phase of all meteorological elements is short, but with more fog days and a better regularity of fog day probability.

各成雾气象因素的主段均短，对应雾日多，对应的雾日机率规律性好；次段虽长，对应雾日却少，规律性有的也较差。

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It is suggested that the total emission of pollutants should be controlled during heavy fog days to avoid the occurrence of heavy pollution events.

有浓雾的天气条件下，建议降低污染物的排放总量，以避免严重大气污染事件发生。

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The night (rain and fog days) Notwithstanding photo, video, photos is still difficult to meet requirements, making it easy for an offense to insufficient evidence.

夜间（雨雾天）尽管有补光，视频 照片依然难以满足要求，容易造成违法证据不足。

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

VOA: special.2010.07.14

The many hills have astonishing views of the blue bay, skyline, and on some days, the fog rolling in.

BBC: Living in: Great waterfront cities

Almaty and surrounding areas have been shrouded in fog for the last two days and the accident appears to have been caused by limited visibility.

NPR: 20 Believed Dead In Kazakhstan Plane Crash

The U.S. Environmental Protection Agency has singled out the greater Salt Lake region as having the nation's worst air for much of January, when an icy fog smothers mountain valleys for days or weeks at a time and traps lung-busting soot.

NPR: Sickening Fog Settles Over Salt Lake City Area