Three speed cycles are simple and reliable to ride around the town.

在城里还是骑三速自行车比较简单和可靠。

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It was a simple system with only three speed codes-normal, caution and stop.

这是一个简单的系统以只三速度代码正常，小心和中止。

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Starting this month, the new Xi'an Chengdu high speed railway will shorten this travel time to three hours.

从这个月开始，新的西安成都高铁将把旅行时间缩短到3个小时。

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Mallory believed that was the only way they would have the energy and speed to climb the last three hundred meters to the top and return safely.

VOA: special.2010.06.30

At that speed, the pressure is three times the force of gravity.

VOA: special.2010.07.07

"It includes three hundred million dollars to buy new cars for the government, eight billion dollars for high-speed rail projects, such as a 'magnetic levitation' line from Las Vegas to Disneyland, and one hundred forty million dollars for something called 'volcano monitoring.'

VOA: special.2009.02.27

The attraction of the inter-governmental route is speed, but it would increase the risk of a two- or even three-speed Europe.

BBC: Will the euro survive?

There are currently three fixed speed cameras in Swindon and 13 mobile ones.

BBC: Council ends speed camera funding

Robert Lockhart admitted riding his Suzuki Hayabusa, which has a top speed of 190mph, at more than three times the speed limit on the outskirts of Dundee.

BBC: Abernethy biker caught at 122mph denies dangerous driving