尘埃无处不在,但“视觉要触及尘埃总是那么困难”。尘埃是人类健康的大敌,所以人们特别讨厌它,因为它带着许多细菌病毒和虫卵到处飞扬,传播疾病。工业粉尘、纤尘能使工人患上各种难以治愈的职业病,过多的灰尘还会造成环境污染,影响人们的正常生活和工作,诱发人类呼吸道疾病等等 Dust is everywhere, but “it is always difficult for vision to reach the dust.” Dust is the enemy of human health, so people particularly hate it, because it is flying with many bacteria and viruses and eggs everywhere, spread the disease. Industrial dust, fiber dust can make workers suffering from a variety of difficult to cure occupational diseases, excessive dust can also cause environmental pollution, affecting people's normal life and work, inducing human respiratory diseases, etc.