the law of averages（平均法则）和the laws of grammar（语法规则）区别一个law是单数,另一个law是复两句话中,为什么一个law是单数,另一个law是复数,后面的average和grammar也有单数和复数的区别呢?

the law of averages（平均法则）和the laws of grammar（语法规则）区别一个law是单数,另一个law是复两句话中,为什么一个law是单数,另一个law是复数,后面的average和grammar也有单数和复数的区别呢? law of the established the law of gravity the law of attract是什么意思 believes the law of the jungle the law of the 如题 within the letter of the law the law of the jungle是什么意思 the Law OF Persons是什么法律? the law of supply and demand是什么意思 省港旗兵 LONG ARM OF THE LAW怎么样 the law of overlearning什么意思 万有引力 THE LAW OF ATTRACTION怎么样 the rules of law in life What are the sources of law? Jack london the law of life the Second Law of Thermodynamics怎么翻译 Explain the sources of law in Australia.