短語詞組短語economic geology significance 經(jīng)濟地質(zhì)意義economic background and significance 經(jīng)濟背景與意義Considerable economic significance 顯著經(jīng)濟利益Economic significance of mollusks 軟體動物的經(jīng)濟意義economic significance of Amphibians 兩棲類的經(jīng)濟意義social and economic significance 社會經(jīng)濟意義socio -economic significance 經(jīng)濟文化意義 返回 economic significance