fog的形容词形式foggy；
foggy：adj.有雾的；雾茫茫的；
fog：n.雾；迷惘；困惑；v.(使)雾气笼罩；使迷惘；使困惑
As often as not the buses are late on foggy days.
每遇多雾天气，公共汽车往往脱班。
It was so foggy that we had to feel our way home.
雾这么大，我们只好摸索着走回家。
When it's foggy the trains are late as often as not.
雾大时，火车往往晚点。
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