这相当于每行驶8047公里的自动驾驶里程，（驾驶员）要手动干涉一次。
That is one intervention about every 8,047 km of autonomous driving.
当然，在过去，电动汽车曾面临一些问题，如有限的行驶里程和紧缺的充电站，这都限制了人们对电动汽车的使用。
Sure, in the past electric vehicles have their problems, namely, a limited driving range, and very few recharging points, which limited their use.
我一年的行驶里程大约为1万英里。
像丰田普锐斯这样的汽油电动混合动力车比传统车型的行驶里程提高了20%。
Gasoline electric hybrid models like the Toyota Prius improve mileage by a further 20 percent over conventional models.
电动汽车的一大问题在于行驶里程有限。
One of the problems for electric vehicles is their limited range.
一些新型电动汽车的行驶里程几乎是老式汽车的三倍。
Some new electric vehicles can travel almost three times as far as older ones did.
这种方法被称为“超速行驶”，它可以使加油里程增加一倍。
今后汽车还得客户自己购买，但电池可以租用，只要按照汽车行驶的里程缴租费就可以了。
Customers will buy their cars, but lease the batteries and only pay for the miles they drive.
因此，充电时间相等的情况下，这两款车在电动模式下的行驶里程相当。
So an equal duration of charging creates the same distance of EV travel in both cars.
车子越小，单位油耗行驶里程标准就越高。
还有行驶里程问题。
自行车传感器测量行驶里程。
美国人开车也越来越多：在1998到2008年之间，抛开商业用车，每位持有驾照的司机的行驶里程平均每年增加0.6%。
And they are driving more: the number of miles driven by each licensed driver (VMT/LD), excluding commercial vehicles, increased by an average of 0.6% a year between 1988 and 2008.
仅仅才使用三到四年，备受争议的Civic轿车行驶里程最多不超过75000英里（120000千米）---为预计使用寿命的一半。
Being barely three or four years old, the Civics in question are unlikely to have done more than 75,000 miles (120,000km) at the very most—about half their expected life.
三菱公共关系部门主管Kazuhiro Yamana承认：“价格和每次充电能行驶的最短里程数是两个最大的挑战，我们必须解决好这两个问题。”
"The price and the short mileage per charge are the two biggest challenges we must address," admitted Kazuhiro Yamana, head of Mitsubishi's public relations department.
在去年11月，行驶里程回到了2007年的水平，今年有可能再创新高。
As of last November, miles driven were back to 2007 levels, and a new record high is likely this year.
"食物里程"这个词汇已被编入词典，意思是食物在你购买前行驶过的距离。
THE term "food miles" - how far food has traveled before you buy it - has entered the enlightened lexicon.
旧版的汽车年检证书上常常写有汽车里程数，所以你可以用这些数据来估算家用车的年行驶里程。
Old MOT certificates usually have a mileage figure on them, so you can use them to estimate the annualmileage of your household cars.
比如，在汽车行驶过程中，仅仅改变进气阀和出气阀的历程就能显著地提高汽油里程。
For instance, simply changing the action of intake and exhaust valves in a car while it is running could significantly improve gas mileage.
但是，廉价的电力汽车则不得不在行驶里程、价格以及便利程度方面折中。
But cheaper electric cars have to make a trade-off between range, price and convenience.
展出的许多电动汽车的电池只能供短里程行驶。
Many of the cars on display can only travel under electric power for short ranges.
然而，为此而增加速度和行驶里程是昂贵的，而且往往技术上仍然不成熟。
Increasing their speed and range to do so, though, is costly and in most cases the technology is not really quite there yet.
由于电池充电缓慢(这一过程耗时数小时，而不是几分钟)，因此汽车的有效行驶里程取决于电池的容量，而电池是很昂贵的。
Since batteries can be recharged only slowly (the process takes hours, not minutes), a car's effective range is limited by the size of its battery. And batteries are expensive.
作为一种主要的截热气体，二氧化碳的产生量与燃油用量成正比，而奔驰精灵自称是美国市场单位燃油行驶里程最长的汽油驱动车辆。
Production of carbon dioxide, the main heat-trapping gas, is proportional to fuel use, and the Smart claims to be the highest-mileage car powered by gasoline on the American market.
第一，接受有限行驶里程的缺点，制造小型经济型汽车供城市交通专用。
One is to accept the range limit and design small, thrifty vehicles specialised for city use.
硅谷的小公司特斯拉汽车公司，想出一种方法来延长电池动力车的行驶里程。
Tesla Motors, a small Silicon Valley company, has come up with a way to extend the range of a battery-powered car.
但对电池寿命、充电站和行驶里程有限的担忧可能会令某些消费者望而却步，除非覆盖面广的基础设施得以建立。
But concerns regarding battery life, charging stations and limited mileage may keep some consumers away until a comprehensive infrastructure is in place.
司机驾驶汽油车和柴油车的方式或多或少会对油耗产生影响，但却与行驶的里程数无关。
Petrol cars and diesels can also get more or fewer miles to the gallon depending on how they are driven, but irrespective of the distance the owner drives.
司机驾驶汽油车和柴油车的方式或多或少会对油耗产生影响，但却与行驶的里程数无关。
Petrol cars and diesels can also get more or fewer miles to the gallon depending on how they are driven, but irrespective of the distance the owner drives.
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