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