Ⅰ. mist “霧”指比fog 薄的“薄霧”，形容詞為：misty. 它還可指：“(眼睛)朦朧”等。如：

　?、?The mountain top was covered with mist. 山頂籠罩著霧氣。

　?、?She tried to see him through the mist of tears. 她試著透過朦朧的淚眼看他。

　　Ⅱ. fog 指較濃的“濃霧”，其形容詞為：foggy.如：

　?、?The fog was so thick that he had to drive very slowly. 霧太濃了， 他必須慢慢地開車。