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- 问题详情：ADutchartistanddesignerhascomeupwithadevicewhichhehopeswillgetridofpollutantsfromBeijing'ssmogskies,creatingcleanairforthecity'smask-wearingpeople.Anelectromagneticfield（电磁场）willpullparticles（微粒）inthesmogtothegroundwheretheycanbeeasilyclea...
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