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Solar panel silhouette
大約 1 年
Solar Panel silhouette
Solar panel array silhouette
Satellite silhouette
11 個月
風力發動機 silhouette
Wind turbines silhouette
Wind turbine silhouette
Windmill silhouette
Solar system silhouette
7 個月
Ac Power Plug silhouette
Energy-saving-lamp silhouette
Sun silhouette