Over the library of one of our great law schools is inscribed th

Over the library of one of our great law schools is inscribed the motto, “Not under man but under God and law." （That’s the ruling principle of American freedom, the source of our democratic liberties.） I’ve tried to make it my guide throughout this contest.
【正确答案】：这是美国自由的核心原则，也是民主自由的滥觞。
【题目解析】：在该句中the source of其实是省略了“that’s”，补全后应为“that’s the source of”，所以我们在翻译的时候要把原句中的两个并列短语补全，翻译成并列句子，即“这是……也是……”。