拓扑学是对图形在任何变形下保持不变的性质的研究。
制药行业的道德领导力不是可选的;这是我们对患者和社会的责任。
The difference between correlation and causation is not just academic—it can have profound policy implications.
【译文】 孔子说:“我想不说话。”子贡说:“您如果不说话,谁教我们呢?”孔子说:“天说过什么?天不说话,照样四季运行,百物生长,天说过什么?”
The violation of Bell's inequalities forces us to reject either locality or realism - or both.