例句與造句

1. However , few researches have quantitatively analyzed the determinants of demand for fish , especially demand for the category - specific fish products . such research has not been made yet in china
   然而卻很少有人對(duì)這種需求變化和影響因素進(jìn)行研究，尤其是對(duì)水產(chǎn)品分品種的需求做定量的研究，在國(guó)內(nèi)還沒有。
2. It's difficult to find determinants of demand in a sentence. 用determinants of demand造句挺難的