单词：electronic-beam generator
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D Demo 音乐样本带 demographic segments 人口区隔 demonstration commercial 展示广告 Demonstrations and comparisons 展示与比较 diffusion filters 柔焦滤镜或柔光镜 Digital Audio Ta
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Bladeless Wind Generator Safe for Birds Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. But they can also be deadly to birds and bats. The turbines large blades t
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