Are Electric Cars the Future?

Electric cars have become much more common over the last ten years.

过去十年里，电动汽车变得普遍得多了。

They produce no exhaust fumes, which helps to keep city air cleaner.

它们不排放尾气，有助于让城市空气更清洁。

They are also cheaper to run because electricity usually costs less than petrol.

它们的使用成本也更低，因为电通常比汽油便宜。

However, they are still more expensive to buy than many ordinary cars.

不过，它们的购买价格仍然比许多普通汽车高。

Another concern is how far they can travel on a single charge.

另一个令人担忧的问题是，它们一次充电能行驶多远。

In some areas, there are still not enough places to charge them.

在一些地区，可供充电的地方仍然不够。

Building the batteries also requires a lot of energy and raw materials.

制造电池也需要大量能源和原材料。

Despite these challenges, many governments plan to stop selling new petrol cars.

尽管存在这些挑战，许多政府仍计划停止销售新的燃油车。

It seems likely that the roads of the future will be much quieter.

未来的道路很可能会安静得多。