有一部分成语包含着一定的科学的道理,试举几例: 雪兆丰年我们知道,雪花里有许多空隙,空隙中充满着空气,而空气是不善于导热的。一场大雪纷纷下,如同一床无边的棉被铺大地。这样既可减少土壤中热量的散失,又能挡住大气中寒气的入侵,作物上的害虫也能冻死不少。此外,雪还能吸收空气中的氨气、硫化氢、三氧化碳、二氧化碳等浮游气体,从而为土壤施肥。所以瑞雪常常预示着来年的丰收。 Some idioms contain some scientific truths. Give a cite a few examples: Xue Zhaofeng Years We know there are many gaps in snowflakes, the air is filled with air, and the air is not good at conducting heat. A snowfall, like a boundless quilt paved the earth. This will not only reduce the loss of heat in the soil, but also block the invasion of cold in the atmosphere, crop pests can freeze a lot. In addition, the snow can absorb ammonia in the air, hydrogen sulfide, carbon dioxide, carbon dioxide and other floating gas, so as to fertilize the soil. So Rui Xue often indicates the coming year's harvest.