smog的例句（smog在句子中的用法）

• The river appeared as if enveloped in smog. 那条河好像笼罩在烟雾之中。
• The sky over the city was overspread with a heavy smog. 城市上空罩上了一层烟雾.
• attempts to reduce smog caused by traffic fumes 旨在降低车辆尾气造成的烟雾的措施
• Cars cause pollution, both smog and acid rain. 汽车造成的污染既有烟雾也有酸雨。