roman system meaning in English

罗马叫牌法

The roman system was a crude anticipation of our own .
罗马制度是我们自己制度粗劣的预演。
For instance , as e the roman system of numeration , the number thirty would have to be written as x : while as per the decimal system it would 30 , further the number thirty three would be xxxiii as per the roman system , would be 33 as per the decimal system
比如，作作罗马数字体系，三十这个数字就要写成x ；而十进制体系是30 ；更进一步，三十三这个数字在罗马数字体系是xxxiii ，而十进制就是33 。