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wind turbine
Wind turbine on blue sky
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image
Oct.29, 2013 15:59:51
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WHITE BLUE ON SKY BUSINESS METAL OUTDOORS NATURE OUTDOOR ENVIRONMENT PLANT WIND ENERGY EFFICIENCY ELECTRIC ELECTRICITY GENERATION INDUSTRIAL POWER TECHNOLOGY INDUSTRY ECOLOGY FARM DEVELOPMENT CLEAN CONSERVATION ENVIRONMENTAL FUTURE PRODUCTION IRON ALTERNATIVE GENERATOR TURBINE INNOVATION ROTATION CLIMATE WINGS ROTATE DIOXIDE RENEWABLE RESOURCE CARBON GENERATE WIND TURBINE WINDFARM