求翻译：相互接触所致，就是通过第三者作为媒质来传递。例如帆船所以能够扬帆疾驶，那是由丁风力直接作用到船帆的缘故；人所以能听到声音，那是因为声源物体(如琴弦)的旅动带动了周是什么意思？

Due to contact with each other, is as a medium to pass through a third party. Such as sailing so sail sped, that is the reason by the direct role of the small wind to sail; they are able to hear the sound, it is because of the brigade moving sound source object (such as strings) driven by a week

Contact with each other, and that is through the first 3, as a medium to communicate. For example so it can be sailing yacht, which was carrying babies by wind directly to sail because of the people; they are able to hear the sound, it was as the sound source object (such as the piano chord) Brigade

Contact with each other is through a third party as a medium to communicate. Such as a sailboat can sail speeding, it is small because of wind to sail directly; one can hear the sound, it is because the source object (such as strings) brigades led by week