例句與造句

1. Henry l . moore and statistical economics " , 1962 , econometrica .
   亨利l穆爾和統(tǒng)計(jì)經(jīng)濟(jì)學(xué)" , 1962年<經(jīng)濟(jì)結(jié)構(gòu)
2. It's difficult to find statistical economics in a sentence. 用statistical economics造句挺難的