【英语时差8,16】美国平均寿命落后于其他国家（下）

For example, a trend in U.S. health care in recent years has been to promote early and frequent screening for diseases. While screening is generally helpful, it also exposes people to radiation. And too much radiation can cause health problems. In many of the other countries studied, including Canada, France, and Sweden, to name a few, everyone has health insurance. And there’s less emphasis on CAT scans¹ and screenings. To be clear, the study doesn’t say that U.S. life expectancy² is decreasing. In fact, it’s increasing. But it’s not quite keeping pace with gains in many other countries.

1 scans   

n.浏览( scan的名词复数 )；审视；（雷达）（屏面上的）光点v.扫描( scan的第三人称单数 )；细看；细查；（雷达）对…进行扫描

参考例句：

• This apparatus scans patients' brains for tumours. 这台仪器扫描检查病人的脑瘤。 来自《简明英汉词典》
• Brain scans have confirmed that the disease is in remission. 脑部扫描已经证实疾病得到了控制。 来自辞典例句

2 expectancy   

n.期望，预期，（根据概率统计求得）预期数额

参考例句：

• Japanese people have a very high life expectancy.日本人的平均寿命非常长。
• The atomosphere of tense expectancy sobered everyone.这种期望的紧张气氛使每个人变得严肃起来。