一年31,536,000秒，30秒死一个，一年死1,051,200。 https://www.cancer.gov/about-cancer/understanding/statistics
In 2016, an estimated 1,685,210 new cases of cancer will be diagnosed in the
United States and 595,690 people will die from the disease.
大陆是美国人口的4倍，医疗条件、营养水平都差，死亡比例应该更高啊。
