“低头”和抬头一场大雪过后，树林子里出现了有趣的现象。只见榆树被厚厚的冰雪压得许多枝条折断，而松树却生机盎然，一点儿也没有受到伤害。原来，榆树的树枝不会变曲，结果冰雪在上面越积越厚，直到将其压断，使树倍受摧残。而松树却与之相反，在冰雪的负荷超过了自己的承 After “bow” and looked up a heavy snow, interesting phenomenon appeared in the woods. I saw the elm was thick ice pressure to break many branches, but the pine is full of vitality, not at all hurt. It turned out that the branches of elm will not change, the result of the snow on the plot more thicker, until it is pressed off, so that the tree devastated. The pine, on the other hand, is overloaded with snow and ice