Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/b4afb1926e113a1975c28e1fa7374c5d.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 ready reckoner英英字典_ready reckoner剑桥英语解释_ready reckoner柯林斯英文解释_沉淀汉英词典
1. N a table of numbers used to facilitate simple calculations, esp one for applying rates of discount, interest, charging, etc, to different sums 簡便計算表