A regular system (of number-words) also makes arithmetic clearer to understand.
数字的规律系统也让算术更加清晰易懂。
2
Fundamentally, chronology is a calendar system - a particular way of reckoning time - and is the framework in which date arithmetic is done. Examples of chronologies supported by Joda are.
从根本上讲，年表是一种日历系统—一种计算时间的特殊方式—并且是一种在其中执行日历算法的框架。
3
Fourthly, I will introduce the system model, design of database, arithmetic of training emulation flow, and the design of gentle training emulation process model and the system.