例句與造句

1. although such history was longer than that of shell money, it always took place in the parcel area of slow economic development
   以鹽為幣的歷史，其下限雖比貝幣漫長，但它始終發(fā)生于經(jīng)濟發(fā)展相對較落后的局部地區(qū)，并非全省性市場上充當商品的媒介。
2. it was not until primitive currencies, such as shell money and copper pieces came along that business started to thrive and prosper . in fact, stamp and currency are natural outcomes of social development
   等古代貨幣的相繼出現(xiàn)和廣泛使用，商業(yè)買賣亦開始活躍起來，因此，貨幣的出現(xiàn)對人類社會經(jīng)濟的發(fā)展可說影響深遠。
3. It's difficult to find shell money in a sentence. 用shell money造句挺難的