求解prep140

sherryke

求解语法prep 140：
In human hearing, subtle differences in how the two ears hear a given sound help the listener determine the qualities of that sound.
in在这是介词么，为什么后面接how引导的状语从句。或是我哪个地方理解错了？

davidliuscu

同问呀哪位知道比较权威的difference in与difference between的区别呀。。

sherryke

谢谢~~

charles1992

In human hearing, subtle differences（省略which are,定语从句 in how the two ears hear a given sound ）help the listener determine the qualities of that sound.