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如果没有灰尘一提起灰尘,人们会马上联想到肮脏和不健康。其实,人类要是真的离开了灰尘,后果将不堪设想。如果没有灰尘,将不会有形态各异的云层、柔和凉爽的树阴、姿态万千的阴影。离开了灰尘,我们就欣赏不到笼罩着山峰的彩色烟雾和令人叹为观止的夕照美景。正是由于大气层中悬浮着细小的灰尘微粒,它们与空气分子一道拦截并且散射着太阳光中最短的光波(蓝色),我们才拥有了瑰丽的蓝天。当太阳下山时,充满灰尘的大气层显露出光波更长的橙光和红光,
Without dust, people immediately think of dirty and unhealthy. In fact, if humans really left the dust, the consequences would be disastrous. If there is no dust, there will be no cloud of different shapes, soft and cool shade, the shadow of thousands of gestures. Left the dust, we can not appreciate the color of the shrouded mountains of smoke and breathtaking sunset beauty. It is precisely because the atmosphere is suspended in small dust particles, which together with the air molecules to intercept and scatter the shortest light in the sun’s light (blue), we have a magnificent blue sky. When the sun goes down, the dusty atmosphere reveals a longer orange and red light wave,