有这样一条公益广告:企鹅一家尤其是小企鹅,时刻盼望着一起床就能看到皑皑的白雪。突然有一天,当它们打开窗户时,发现大地被一片白色笼罩,森林失去了绿色,田间不见了金黄,河里的溪流不再欢闹……小企鹅高兴得手舞足蹈,因为下“雪”了!然而当它们走出家门,那飘动的“雪”却发出 There is such a public service advertisement: The penguins, especially the little penguins, are always looking forward to seeing the white snow. Suddenly one day, when they opened the window, they found that the earth was covered in a white cloud, the forest lost its green, the field was no longer golden, and the streams in the river were no longer hilarious... The little penguin was dancing with joy because it was snowing! When they came out of the house, the wafting “snow” was issued