As they pass by, all spread out, one sees that some runners seem to be gaining rapidly. And yet they do not often overtake one another, because the distances between them are so large.
关注这些国家的发展就像在观赏一场马拉松赛。开始时，多数选手都非常引入瞩目，似乎所有人都飞快地向前奔跑。当他们拉开距离从你身边跑过时，你就能看到有些选手似乎正在快速地缩短与领先者的距离。但他们并不经常完成超越，因为他们之间相距实在太远。实际可能根本看不到其他选手，因为选手之间可能有着几英里的差距。