How do governments and councils find out about what is happening to the populations? 地方政府和议会是如何了解人们中间发生的事呢?疑问一:population 可以像这样表示“人们”吗?疑问二:为什么用复数形式的 populations 呢?
“It was he who spotted, in 2013, that within the two-decade cohort of susceptible individuals in 1918 there was a particular spike in mortality among those exactly 28 years old.”老师这句话里强调的是who 还是that,还有就是可以分析下剩余的语法结构么,谢谢老师!