disadvantage by building the long walls

与牢固的海港相连的城墙
connecting the city to its fortified harbor,

来对冲这种不利
thereby in effect turning the city into an island.

从而使雅典城邦变成孤岛
It was an extraordinary strategy,

这一战略卓越非凡
far ahead of its time,

具有远见卓识
in its reliance on human reason and technology and

因为它依托人类的理性与技术
its rejection of traditional ways of fighting

颠覆了殒民无数
that cost lives and gave the enemy an advantage.

为敌人提供契机的传统作战方式
At the same time, he abandoned all ideas of further expansion

与此同时他摒弃了所有寻求扩张的提议
and devised a policy aimed at preserving peace and

制定出一套旨在维护和平与现状的政策
the status quo that perfectly suited Athenian interests.

与雅典的利益丝丝契合
Such a policy depended for success

这一政策的成功取决于