contaminated air

• 污染空气

contaminated air的用法和样例：

例句

1. Cars pollute the air in the form of waste gas.
   汽车以废气的形式污染空气。
2. These gases form polluted air, or smog.
   而这些气体就会形成污染空气或烟雾。
3. Heating is concerned with the supply of fresh air and removal of air that is vitiated, polluted, or contaminated.
   供暖系统参与了新鲜空气的供给和污浊空气的排除。