It takes just 1.5 kilowatt-hours (5.4 MJ) energy to rotate the Wheel -roughly the same as boiling eight small domestic kettles of water.
转动轮子只需要1.5千瓦时(5.4兆焦耳)的能量,这与使用8壶家用小水壶的能量大致相同。
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"This breaks the major rule in the American belief system-that anyone can do anything," explains M. J. Ryan, author of the 2006 book This Year I Will... and Ms. Markova's business partner.