She wanted to test the theory that, since fights between lions are very costly, when lions heard large Numbers of intruders' roars they would withdraw unless they were in superior Numbers.
她试图去检验这样的理论：由于狮群之间斗争的惨烈，当听到大量入侵狮子的吼叫声之后，狮群除非在自身数量占优势，通常都会选择撤退。
An approximate expression of the volume of body of rotation together with its error estimation is derived on the basis of theory of numbers.
本文用数论方法推导出一个计算旋转体体积的近似公式，并给出该近似公式的误差估计。
The Pythagoreans elaborated on a theory of numbers , the exact meaning of which is still debated among scholars.
毕达哥拉斯详细叙述数的理论，其准确的含义至今仍在学者中有争议。
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