The high specificity between symbionts due to coevolution was also found by artificial resynthesis. 地衣的人工重建表明，真菌与藻类在协同进化的过程中已产生了较高的专一性。
As for the export of canned and norms of specificity, in terms of price and quality on the world market in the world to hold a strong share. 由于对罐头出口的专一性和规范性，在价格和质量上在世界世界市场上占据了有力的份额。
