“春江水暖鸭先知”这一脍炙人口的诗句,不仅意境优美,而且蕴含着深刻的科学道理。动物行为学家的研究显示,鸭子蹼上血管排列巧妙,动脉和静脉血管相互交织成一个能够预热血液、保持恒温的网络。正因如此,覆盖在江河湖塘的冰面刚刚消融,勇敢的鸭子就急不可耐地跳进冰冷的河水,嬉戏捕食。再说鸭子 The popular poem “Spring River Plumbing Duck Prophet” not only has a beautiful mood, but also contains profound scientific principles. Research by animal behaviorists shows that the blood vessels on the ducks are well-arranged and arterial and venous blood vessels are intertwined into a network that can preheat blood and maintain a constant temperature. Because of this, the ice that covered the rivers and lakes has just melted away, and the brave ducks jumped into the icy waters and hunted prey. Say duck