a mount of 与a number of 与the number of 的区别

a mount of 与a number of 与the number of 的区别 the number of 与 a number of 的区别 the number of与a number of的区别是什么? A great number of 与 The number of 的区别 a number of 与the number of 的区别 a number of与the number of的区别 the number of与a number of的区别 the number of与a number of the number of与a number of有什么区别? an amount of,a number of,the amount of,the number of的意思与区别? a mount of和a number of 的区别. a quantity of与the number of的区别