to the power of four

North China University of Water Resources and Electric Power in Zhengzhou, Henan province, has halved the holiday to four days. It will start winter vacation a week earlier than scheduled instead.

位于河南省郑州市的华北水利水电大学决定国庆假期放假4天，寒假放假时间提前7天。

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Three to the power of four is 81.

3的4次方是81.

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He has placed four pairs of solar panels on the roof to store the power in a battery, which helps him operate the studio by night. 4.

他把四对太阳能电池板放在屋顶上，将能量储存在一块电池里，这有助于他夜间开展工作。

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With a transmission capacity of four million kilowatts, the line stretches across 80 cities, delivering power from the Belo Monte hydroelectric dam to economic centers in the southeast like Sao Paulo and Rio de Janeiro.

线路途经80个城市，输电能力400万千瓦，将电力从贝罗蒙特水电大坝输送到巴西东南部的经济中心地区，如圣保罗和里约热内卢。

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The Range Rover features permanent four wheel drive to cope with the power and torque output of the V8 engine.

揽胜永久的四轮驱动特点，使其有能力应付大功率和扭矩输出的V8发动机。

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