韩礼德认为科学语言有两大基本句式:一致式和隐喻式。一致式是隐喻式建构的前提。在隐喻式构建过程中,语法隐喻会出现层级转换与功能转换。因此在翻译过程中,可以视难易程度对科技语言中的隐喻式句子采取同级或升级翻译策略。 Halliday believes that there are two basic scientific language syntax: consistent and metaphorical. Consistency is the premise of metaphorical construction. In the metaphorical construction process, the grammatical metaphor will appear the level transformation and the function transformation. Therefore, in the process of translation, the translation strategy can be adopted at the same level or by escalation to the metaphorical sentences in scientific and technological languages ​​according to the degree of difficulty.