2012年7月11日 星期三

solar-powered electric bike 太陽能動力電動自行車

Barbara Walton / EPA
Burmese teacher heads to work on solar-powered electric bike - PhotoBlog
http://photoblog.msnbc.msn.com/_news/2012/07/09/12647260-burmese-teacher-heads-to-work-on-solar-powered-electric-bike?lite

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