语法：I had a knack that had been the measure of success in my life and that of my peers.

后面的that of my peers,求解释？（中文意思已经知道了，但看不懂）谢谢
各位师傅，
可是翻译是：
我有一个通过考试的诀窍，并且数年间一直让我在大学生活和同龄人中不落人后。

有省略成分，而且有定语从句，变成陈述句，比较好理解：
a knack had been the measure of success in my life and the measure of success of my peers
我生活的巨大成功，也是我同伴（同类人）的巨大成功。。。
that指代the measure of success
我有一个窍门，它促成了我人生的巨大成功，也是我的同龄人们巨大成功的必要因素。

My peers 前加of 名词短语后置 这样的语法可以作为形容词使用。而that则是语法上置于名词knack后的关系代词，其无实际意义，仅语法上做一个标志，表明是此种语法。希望你懂了。

看看下面的列子 I had a knack for passing examinations, and that, for years, had been the measure of success in my life and that of my peers. 但是我知道通过考试的技巧，当然，这也是好多年来评价我，以及我同龄人是否成功的标准。

你好！ 看看下面的列子 I had a knack for passing examinat籂甫焚晃莳浩锋彤福廓ions, and that, for years, had been the measure of success in my life and that of my peers. 但是我知道通过考试的技巧，当然，这也是好多年来评价我，以及我同龄人是否成功的标准。 仅代表个人观点，不喜勿喷，谢谢。