Rail travel is usually cleaner, greener and faster than travel by car.
铁路通常比汽车更清洁，绿色，也更迅速。
Many people believe what we really need is a cleaner car.
很多人认为我们真正需要的是更为环保的车型。
They are trying to find a cleaner fuel for car.
他们正试图找一种更干净的汽车燃料。
Your car will become at least 40% more fuel efficient and produce cleaner emissions.
您的汽车将成为至少有40 %以上的燃料效率和生产更清洁的排放。
Your car will become at least 40% more fuel efficient and produce cleaner emissions.
您的汽车将成为至少有40 %以上的燃料效率和生产更清洁的排放。
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