千里冰封,万里雪飘,隆冬的严寒封锁着北国大地。这时畜禽纷纷进暖圈饲养,人们也添加衣裳,以御寒防冻。然而奇怪的是,生长在冰雪中的树木却若无其事,迎风斗雪,傲然挺立。树木为啥能御低温严寒呢? Trinidad frozen, thousands of miles floating in the snow, the cold winter blocked the northern land. At this time, livestock and poultry have kept in warm circle and people also added clothes to keep it cold and freezing. However, it is strange that the trees that grow in the snow and ice do nothing but the snow-covered slopes. Why can the trees cool the cold?