自己看:http://cache.baidu.com/c?word=%BA%BA%CA%E9%3B%2E%3B%D0%D9%C5%AB%3B%B4%AB&url=http%3A//www%2Exysa%2Ecom/qianhanshu/s%2D094%2Ehtm&b=0&a=21&user=baidu