我们的先辈一定,很惊讶于,太阳能是哪里来的,光和热是来自哪里。
Our great-grandfathers must have been puzzled about where the solar energy came from the heat and the light, where it came from.
87年前，我们的先辈们在这个大陆上创立了一个新国家，它孕育于自由之中，奉行一切人生来平等的原则。
Fourscore and seven years ago, our fathers brought forth upon this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal.
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