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1.描述过程，流程常用句子 the following diagraph shows the structure of the picture illustrates it mainly consists of it works as follows. it always involves following steps. the whole procedure can be divided intostages. 2.描述流程，过程的常用过渡性词语 firstly secondly thirdly/finally the first step is to the next step is to the last step is to the first stage involves in the next stage in the following stage in the last stage first of all to begin with next then later at the same time simultaneously subsequently consequently before this during after this in the course of in order to/in order not to in order that so as to/so as not to 描述流程的文章，应说明： 1. 首先说明是做什么工作的过程，目的是什么 | 
