DDB Paris created this billboard, which is completely powered by oranges, for Tropicana. Electricity was generated by attaching 2,500 oranges to wood fitted with zinc and copper spikes. The orange juice dissolved the metals, causing their electrons to react and create a current.

DDB has more in store with the orange-powered campaign; all will be revealed next month.

答案是2500個橘子，可以為一個公車站廣告牌供電（直到橘子干吧）。

巴黎一個名為 DDB 的團隊在街頭為果汁品牌 Tropicana，制作了這個水果電池廣告牌。據說在下個月，他們還將在巴黎或者法國制作更多的橘子廣告牌。

水果由于酸堿度的問題可以有一絲絲生物電，電壓偏低，具體制作方式大家可以搜索“水果電池”。