句子是语言运用中表达思想内容的基本单位。任何篇章总是由一个一个句子组成的,这就有句与句之间的逻辑联系、起伏照应、承接转换的连贯性(Coherence)问题。在科技翻译中,常常发现,如果一句一句孤立看,有些译文似乎问题不大,但通篇或整段却似断线残珠,四下散落,没有贯穿联成一气的逻辑线索或脉络。究其原因,主要是忽视了原文中或明或隐的连贯 Sentences are the basic unit of expression of thought in the use of language. Any chapter is always composed of a sentence, there is a logical link between the sentence, ups and downs, to undertake the transformation of the Coherence problem. In the translation of science and technology, we often find that if we look at each sentence in isolation, some of the translations seem to be of little problem. However, they are still broken through the whole article or through the whole paragraph. There is no logical clue or context that goes hand in hand. The reason is mainly ignoring the original or explicit or implicit coherence