fog、mist与smog这些名词都可表示“雾”之意。
fog : 指较浓的雾。
- Thick/Heavy/Dense fog has made driving conditions dangerous.
浓雾使开车颇为危险。 - Mist, fog, and snow are common in this area.
薄雾、寒雾和雪在这个地区很常见。 - It took several hours for the fog to lift.
几个小时以后雾才散去。
mist : 指轻雾，气象学上称作霭。
- The mountain villages seem to be permanently shrouded in mist.
山村好像永远笼罩在薄雾之中。 - The early-morning mist soon lifted/cleared.
清晨的薄雾很快就散了。
smog : 指工业区的烟和雾相混而造成的又黑又浓的烟雾。
- Smog is a major problem in Athens.
雾霾是雅典的一个主要问题。 - As we flew into the airport, we could see a murky yellow smog hovering over the city.
我们飞进机场时，可以看到一层黄色的雾霾笼罩在城市上空。
