例句
英語六級真題
Demographers (人口統計學者) reckon that three-quarters of humanity could be city-dwelling by 2050, with most of the increase coming in the fast-growing towns of Asia and Africa.
出自-2013年6月閱讀原文
柯林斯高階英漢雙解學習詞典釋義
-
N-UNCOUNT
人口學;人口統計學
Demography is the study of the changes in numbers of births, deaths, marriages, and cases of disease in a community over a period of time.