If you have to travel and you want to make as little impact as possible on the climate, your best bet is to go by train, bus or even ship, found a new study. Airplanes are the next best option.

如果你想出游并且尽量减少对气候的影响，你的最佳选择就是乘火车，公共汽车，或者乘船，据一项新的研究发现，飞机是稍次的选择，自驾车最差。

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This momentum gives the train enough energy to make it up the next hill.

这种动量使车体有足够的能量爬上下一个坡。

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Man: Yes. It's alright this time. I won't make you buy two new tickets. But next time, please be sure you are on the right train.

验票员：是的。这次就算了，我不要求你们再重新买票。不过下次别搭错车喔。

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