观看免费视频 Hydroelectric Dams - Exteriors B-Roll
动画说明：
This free, downloadable B-roll footage from the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) is for use by news media and education organizations. This high-resolution video features hydroelectric dams exteriors in Washington, South Dakota, Massachusetts, and New Hampshire, including clips of Rock Island Dam, Rocky Beach Dam, powerhouse and dam at Lake Chelan hydroelectric project, Fort Randall Dam and Cabot Station Electric Generating Plant.