八圈相当于一英里。

Eight laps equaled one mile.

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若从温室气体排放角度计算，减少一半的浪费即相当于减少了八分之一的汽车排放量。

It is claimed that cutting the total by half would be equivalent - in terms of greenhouse gases - to taking one in eight cars off the road.

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他说，和人们日常所用的六个或八个字符的密码不同的是，一个256位的密钥相当于一个40到50字符的密码。

Unlike a regular six - or eight-character password that most people use every day, a 256-bit key would equal a 40 to 50 character password, he said.

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