a quantity of,the quantit of和quantities of的区别

a quantity of,the quantit of和quantities of的区别 a quantity of 和quantities of 的区别? a quantity of 与 quantities of的区别 a quantity of quantities of 关于a quantity of 和 quantities o a large quantity of 和large quantities of的用法区别? a large quantity of等于large quantities of吗 a large quantity of 和large quantities of 和a large a lot of 和 a quantity of 的区别 a quantity of和a number of的区别 a quantity of与the number of的区别 a large quantity of ,large quantities of的用法各是怎么样的,有什么不同和相同?