答案:Segmentation is to cut a long text into short chunks. The purpose for doing so is to highlight certain parts of the text and make the text easier to process on the part of the reader, for the longer the language units the more difficult to process. Compare:(1) There is a little valley among high hills, which is one of the quietest places in the whole world and which is not far from this village—perhaps about two miles.(2) There is a little valley among high hills. It is one of quietest places in the whole world. The valley is not far from this village—perhaps about two miles.To most readers (2) should be easier to process because (1) is segmented into shorter units.