When you get on the highway, shift into fifth gear.

行驶到高速公路上时，换到第五档。

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He found that if he kept the truck in fifth gear and didn't go any slower than 25 MPH, he could still move ahead, even with his engine on fire.

他发现如果他使卡车在五分之一挡并且速度不低于25英里每小时的话，即使他的引擎是着火的他仍然可以继续前行。

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More torque can be sent to the wheels in first gear than in fifth gear because first gear has a larger gear-ratio by which to multiply the torque.

一档变速传给车轮的转矩比五档传出的转矩大，因为一档变速有大的传动比，而大的降速比则加大了驱动力矩。

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Finally, fifth gear, the carbon value: plug-in cars will only be as green as the electricity they're using.

BBC: Promise, but daunting challenges for electric cars

It is also a regular location for television shows such as Top Gear and Fifth Gear and featured in the James Bond film, Casino Royale.

BBC: Tracks

But they may have to shift into fifth or at least fourth gear instead of the usual second gear of the Chinese government.

FORBES: China Official Warns Of Tough Months Ahead For Exporters