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building clip art clipart image svg openclipart architecture chimney color factory industry manufacturing colour smoke industrial 剪贴画 颜色 建筑 建筑物 彩色
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clip art clipart svg openclipart assembly line car factory industry transportation media check 剪贴画 小汽车 汽车 运输 多媒体
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clip art clipart svg openclipart assembly line car factory industry transportation media check 剪贴画 小汽车 汽车 运输 多媒体
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clip art clipart svg openclipart chimney color nature industry health smoke save urban air pollutant environment poison earth planet ecology quality pollution dust heavy kyoto chemicals co2 cfcs atmosphere carbon monoxide emissions fumes ozone particulate matter scrubbers sulphides responsibility 剪贴画 颜色
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building clip art clipart image svg openclipart architecture chimney color factory industry manufacturing colour smoke industrial 剪贴画 颜色 建筑 建筑物 彩色
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clip art clipart home svg openclipart green color industry 图标 sign symbol save power saving produce ecology eco no pollution fatory 剪贴画 颜色 符号 标志 绿色 草绿 家
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clip art clipart svg openclipart black industry engine wheel technology power force circle gear circular receive cog machinery mechanics transmit 剪贴画 黑色 圆形
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clip art clipart svg openclipart grey industry engine wheel technology power force circle gear circular receive cog machinery mechanics transmit gears 剪贴画 圆形 灰色
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clip art clipart svg openclipart gold industry engine wheel technology power force circle gear circular receive cog machinery mechanics transmit gears 剪贴画 圆形 黄金 金色
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clip art clipart svg openclipart grey industry engine wheel technology power force circle gear circular receive cog machinery mechanics transmit gears 剪贴画 圆形 灰色
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building clip art clipart image svg openclipart architecture color factory industry manufacturing 图标 colour sign symbol smoke industrial ventilation 剪贴画 颜色 符号 标志 建筑 建筑物 彩色
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building clip art clipart image svg openclipart architecture chimney color factory industry manufacturing 图标 colour sign smoke industrial 剪贴画 颜色 标志 建筑 建筑物 彩色
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building clip art clipart image svg openclipart architecture chimney color yellow factory industry manufacturing colour smoke industrial 剪贴画 颜色 黄色 建筑 建筑物 彩色
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clip art clipart svg openclipart time industry engine construction power robot mechanic horse mechanics 剪贴画
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clip art clipart svg openclipart factory industry workers paris university poster france protest crowd students strike struggle may protesting proleterate reforms 剪贴画
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