| 单词 | pollution concern |
| 释义 | pollution concern It was 'not sensible' for motorists who drive almost exclusively in towns and cities to buy diesel cars because of air pollution concerns; ? Times, Sunday Times The pollution concerns don't seem to be dampening people's enthusiasm for gathering around open flames, according to fireplace designers. Times, Sunday Times Gasoline models have traditionally been two-stroke engines, but four-stroke engines were recently introduced to partially address air pollution concerns. Retrieved from Wikipedia CC BY-SA 3.0 This led to serious pollution concerns that persist up to the present time. Retrieved from Wikipedia CC BY-SA 3.0 Leaf blowers are usually powered by two-stroke engine or an electric motor, but four-stroke engines were recently introduced to partially address air pollution concerns. Retrieved from Wikipedia CC BY-SA 3.0 |
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