名詞 demographer:

1. a scientist who studies the growth and density of populations and their vital statistics
   同義詞：demographist, population scientist

1. Demographers and geographers attribute the slowing largely to the recession, which has hit California particularly hard, leaving its once-robust economy to bring up the rear of the national recovery.
   人口學(xué)家和地理學(xué)家把緩慢的情形都歸咎于不景氣，加州情形尤為嚴重，以致加州一度蓬勃的經(jīng)濟竟然在全國復(fù)蘇中落在各州之后。