有几个英语句子不懂.

题目

有几个英语句子不懂.
the gate that guard the entrances to the professions,to science,art,literature,agriculture---every department of human endeavor.

Even the most industrious person might adopt it with advantage to serve as a reminder that,
3.Just as truly as eternal vigilance is the price of liberty,so is eternal industry the price of noble and enduring success.


句子的结构不清楚，比如第二句的might adopt it with advantage to serve as a reminder that第三句的so is 总之有点晕

答案

 so that they may unlock the doors of knowledge,the gate that guard the entrances to the professions,to science,art,literature,agriculture---every department of human endeavor.guard前面的that引导...