If ever the earth has noticed a system of administration conducted with a single and keen eye to the general interest and happiness of those committed to,it must be the system protected by truth,to which our lives have been devoted to.求教前半句的意思，剖析一下句子结构。
If ever the earth has noticed a system of administration conducted with a single and keen eye to the general interest and happiness of those committed to, it must be the system protected by truth, to which our lives have been devoted to.
【翻译】假如在世界上有一种管理规范，实行时有一只敏锐的双眼审视着它，以维护那些为之奉献的大家的常见利益和幸福，那样它肯定是受真理保护的规范，也是大家用生命一直捍卫的规范。
【剖析】这是一个含有if 条件句的复合句，而且，本句用了“无生命主语”修辞格。
1. 从句：If ever the earth has noticed a system of administration conducted with a single and keen eye to the general interest and happiness of those committed to
2. 主句：it must be the system protected by truth, to which our lives have been devoted to.
3. 在条件从句中，the earth（主）has noticed （动）a system of administration（宾）
4. 过去分词短语conducted with a single and keen eye to the general interest and happiness of those committed to, 作定语修饰a system of administration（管理规范）。其中过去分词短语committed to，修饰those（大家）
5. 过去分词短语protected by truth作定语，修饰the system
6. 非限制性定语从句to which our lives have been devoted to，第三修饰the system
【翻译方法】“无生命主语”修辞格的句子，假如主语为时间、地址等名词，谓语常用see, find, meet, witness, notice 等动词。翻译时，一般把这类英语句子的主语看作“时间或地址状语”，谓语动词则不必翻译出来，由于实质性内容就是它的宾语及其定语。假如宾语是表示“某种行为或动作的名词”，可译为谓语。重点内容是定语。
比如：
The year 1949 witnessed the founding of the Peoples Republic of China. 1949年，中华人民共和国成立。
This stadium has seen many exciting football matches. 在这体育场里举办过不少精彩的足球赛。
Dusk found a little boy crying in the street. 黄昏时一个小孩子在大街上哭。
Rome witnessed many great historic events. 在罗马城发生了很多伟大历史事件。
The following year saw the death of his mother. 第二年他母亲过世了。
Dawn met him well along the way. 拂晓时，他早已走了一大段路。
The world history has seen more tears than laughter. 在世界历史上眼泪比欢笑多。
Shanghai first saw the rise of this movement.这个运动第一在上海兴起。
The city witnessed the outbreak of the war. 战争是在这个城市爆发的。
Nightfall found him many miles short of his appointed place. 当夜幕即将来临时，他离预定的地址还有好几英里。
The forty years, 1840-80, brought almost ten million migrants to America. 从1840至1880年这四十年中，近一千万移民移居美国。
