The study of the early universe is not just about understanding the past, but also about uncovering the fundamental laws that govern all of reality.

过去是一个异国他乡；他们做事的方式不同。

解释：饿了再吃，粗茶淡饭味道也像吃肉一样可口。安稳走路就不会感觉到劳累，权当坐车。

利润永远不应该以牺牲人或地球为代价。