The most careful observation of one developing caterpillar will not help us to predict its transformation into a butterfly. 对一个正在成长的蝎子进行最仔细的观察也不能使我们预见它变成蝴蝶。
Careful observation of such leaf lamina shows that veins do branch and converge in places, especially near the base and apex of the blade. 仔细的观察表明叶脉在某些地方分支和联合,尤其在叶片的顶端和基部。