Earth Hour marked by hotels around 皇冠体育app
By Jiang Wanjuan | chinadaily.com.cn | 2017-03-27 17:24
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A power generation device is placed in the lobby at the Four Points by Sheraton Langfang Gu'an on March 25. Electricity can be produced by pedaling the stationary bike in order to light up the board on the wall. [Photo provided to chinadaily.com.cn]
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