如果所从事研究的都是印欧语,那么语义结构的对应关系相对地说是明显的,因为不仅时间使其对应关系或多或少比较统一,而且结构差异也不大。另一方面,要是从一个语系翻译为另一个语系,特别在文化背景差异很大情况下,如从希腊语译成祖鲁语或从希伯来语译成巴鲁安语就有直接而明显的困难。一个理由是词类的语义内容差别极 If the studies are all in Indo-European languages, then the correspondence between semantic structures is relatively obvious because not only does time make their correspondences more or less uniform, but also the structural differences are not large. On the other hand, if one translates from one language family to another, especially if the cultural background varies greatly, from Greek to Zulu or from Hebrew to Baruán there is a direct and obvious Difficulties. One reason is that semantic content of parts of speech is very different