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？作者: charles1992 时间: 2011-9-26 21:36
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.作者: sherryke 时间: 2011-9-27 06:21
