We may say , therefore , speaking very generally , that men h * * * e used the increased productivity which they owe to science for three chief purposes in succession : first , to increase the population ; then , to raise the standard of comfort ; and , finally , to provide more energy to war 因此，我们可以概而言之地说，科学的发展带来了生产率的提高，人们由此可以依次实现三个主要目的：第一，增加人口的数量；其次，提高舒适生活的标准；再次，为战争提供更多的能源。
We may say ， therefore ， speaking very generally ， that men have used the increased productivity which they owe to science for three chief purposes in succession ： first ， to increase the population ； then ， to raise the standard of comfort ； and ， finally ， to provide more energy to war 译文因此，我们可以概而言之地说，科学的发展带来了生产率的提高，人们由此可以依次实现三个主要目的：第一，增加人口的数量；其次，提高舒适生活的标准；再次，为战争提供更多的能源。
