heavy fog

基本解释

The highway to Nanjing is/was/has been closed due to the heavy fog.
因爲大霧，通往南京的高速公路關閉了。
With a smile, Kongming answered, “From my view, Cao Cao will not take the risk—coming forth in this heavy fog.
孔明笑曰："吾料曹操於重霧中必不敢出。
The plane crashed short of the runway in heavy fog after controllers told the pilot to divert to Moscow or Minsk, Russian officials said.
俄羅斯官員說，這架飛機在濃霧中未能降落在跑道上，隨即失事，此前塔台控制人員曾告訴飛行員，要他轉往莫斯科或明斯尅的機場降落。

The color also is easier to see in the heavy fog that often covers the area.
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.
The plane crashed as it tried to land amid heavy fog, killing all onboard - President Lech Kaczynski, his wife Maria and a delegation that included Poland's top military leaders as well as many political and cultural figures.

We landed in Frankfurt in heavy fog and gathered in the terminal for the first time as a full group.
NEWYORKER: The Grand Tour