But as we use the word, "friend" can be applied to a wide range of relationships ——to someone one has known for a few weeks in a new place, to a close business associate, to a childhood playmate, to a man or woman, to a trusted confidant. 

to someone one has known for a few weeks in a new place这个是什么成分，前面有个破折号，做apply的宾语吗？one has known做someone的定语吗？