One of the most scenic areas is the Loire Valley,where you can visit the old castles in which the kings and queens of France used to live.这句话里面为什么有in?in在这里表达的是什么意思?
问题描述：
One of the most scenic areas is the Loire Valley,where you can visit the old castles in which the kings and queens of France used to live.
这句话里面为什么有in?in在这里表达的是什么意思?
答