来自《耶鲁大学开放课程：古希腊历史简介 第7集 第7集》
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They could go away他们可以离开 -
and they did, in very considerable numbers,并且其中很多人这样做了 -
and so one is easily reminded of the American experience,由此人们很容易想到美国的经历 -
as it has often been interpreted,这也是一个典型的例子 -
in which the frontier is seen to be边界对美国人来说 -
a tremendously valuable safety valve to the Americans,是相当珍贵的安全阀 -
first as colonists, and then as independent people.从殖民地开始 到独立的民族 -
Americans didn't have the kind of terrible class warfare美国崛起中并没有此种可怕的阶级斗争 -
and the terrible warfare within cities that和分裂战争 而这正是欧洲国家 -
the Europeans had experienced throughout most of their history,在整个历史上不断经历的 -
because really unhappy and angry people因为真正不满和愤怒的人民 -
could always go west, get new places.总会到西方去 找到新的家园