本文在分析科技文献句群间的关系、句群内部的句与句之间关系的实例的基础上,提出在翻译科技文献时注意的问题,并指出培养句群层次的翻译操作意识的必要性。 Based on the analysis of the relationship between sentences in science and technology documents and the relationship between sentences and sentences in sentence group, this paper puts forward the problems that should be paid attention to when translating scientific literature, and points out the necessity of cultivating awareness of translation operation at the sentence group level .