1·Republicans need to admit that maintaining adequate public provision as the population ages requires, almost as a matter of arithmetical necessity, more revenues.
共和党需要承认，随着美国人口日益老龄化，维持充足的公共供给需要(这种需要几乎等同算术意义上的必需)更多的税收收入。
2·On the other hand, women are slightly better at arithmetical calculations.
另一方面，女性在算术运算上稍好于男性。
3·Many of the arithmetical problems were solved by false position.
许多算术问题是用试位法解的。
4·But the Chinese were always strong in arithmetical techniques and calculations.
但中国人在算术技能和计算方面实力很强。
5·Any one who considers arithmetical methods of producing random digits is, of course, in a state of sin.
任何考虑用算术方法产生随机数字的人，可以肯定，都在犯错误。