问个句子

zipee

王若平－难句分析：第46页中：
The resistance experienced when one body moves over another,with which it is in contact,is called the frictional force.
其中：experiened是个什么结构？在句中起什么作用？
　　　\"with which it is in contact\"怎么翻译？which和it各指代什么?in contact with是组合在一起的么？