求翻译：随着世界的发展，人们的生活也在不断改变，越来越多的人购买私家车，汽车使人们的旅行更加舒适方便，但是越来越多的汽车加重了空气的污染，也造成了交通拥挤和很多交通事故。所以我认为政府应该适当控制私家车的数量是什么意思？

With the development of the world, people's lives are changing, more and more people to buy private cars, cars make people travel more comfortable and convenient, but a growing number of cars increased air pollution, also caused traffic congestion and many accidents. So I think the Government should

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