被动语态是科技英语中经常使用的语言现象之一。本文结合若干例证,在刘重德的“信、达、切”三字原则的指导下,提出了三个相应的翻译策略,即重视被动标记,保全被动意义;遵循语言习惯,顺畅被动表达;精炼译文字词,切合原文风格,以期对科技英语中被动语态的翻译起到一定的指导作用。 Passive voice is one of the most frequently used linguistic phenomena in EST. Under the guidance of Liu Zhongde ’s “three principles of letter, up, cut ”, combining with a few examples, this paper puts forward three corresponding translation strategies, that is, attaching importance to passive marks and preserving the passive meaning; Refinement of translation words, in line with the original style, with a view to the translation of passive voice in science and technology play a guiding role.