We are sure that if there are fewer people driving, there will be less air pollution.
我们确信，如果开车的人少一些，空气污染就会少一些。
If everyone drives such a car in the future, there will be less pollution in the air.
如果将来每个人都开这样的车，空气中的污染会更少。
The more there are sharing riding bikes in cities, the less pollution there will be.
城市中共享单车的数量越多，污染就会越少。
If we try our best to recycle the wastes, there will be less waste and less pollution in our life.
如果我们能尽力将废品回收再利用，那废品将会大量减少，我们周围的污染也会大大减轻。
In a word, if everyone pays more attention to our environment, there will be less pollution and our lives will be better.
总之，如果每个人都更加关注我们的环境，将会有更少的污染和我们的生活将会更更。
It is certain that if there are fewer people driving, there will be less air pollution.
可以肯定，如果开车的人少一些，空气污染就一定会减少。
It is certain that if there are fewer people driving, there will be less air pollution.
可以肯定，如果开车的人少一些，空气净化就会少一些。
In a word, if everyone pays more attention to our environment, there will be less pollution and our life will be better.
总之，如果每个人都更加注重我们的环境，将有更少的污染和我们的生活将会变得更好。
There are many other ways to reuse the wastes. If we try our best to recycle the wastes, there will be less waste and less pollution in our life.
还有许多废品再利用的方法。如果我们能尽力将废品回收再利用，那废品将会大量减少，我们周围的污染也会大大减轻。
If people drive such cars in the future, there will be less pollution in the air. There will be more space for parking in cities. The streets will be less crowded.
如果将来人们开这样的车，空气中的污染会更少，城市会有更多的地方停车，街道也会不那么拥挤。
In a word, if everyone pays more attention to our environment, there will be less pollution and our life will be better.
总之，如果每个人都非常重视对我们的环境、污染就越少，我们的生活将会是比较好的。
There will be fewer people and less pollution in 50 years.
五十年后人口将更少污染也更少。
There will be fewer people and less pollution in 50 years.
五十年后人口将更少污染也更少。
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