The diagram gives information about the process of making carbonated drinks.

　　主体分段方法：
　　主体1：Stage 1-2
　　主体2：Stage 3-5

　　开头段

　　The flow chart illustrates the key steps involved in the production process of carbonated drinks.

　　概述段

　　Overall, there are five main stages in the whole process, starting from the purification of raw water and ending with the delivery of the final product to supermarkets.
　　思路要点：
　　- 总共5个阶段
　　- 第一步：净化水
　　- 最后一步：运输最终产品

　　Body paragraph 1

　　Initially, raw water is directed into a filter to remove impurities, after which it is softened and treated with chemicals. The clean water is then pumped into electric heaters, where it is heated before being conveyed through a cooling pipe. Once cooled, the water is combined with carbon dioxide, producing carbonated water.

　　思路要点：
　　- （Stage 1）raw water经过过滤器(filter)去除杂质→随后加入软水剂( water softener)和其他化学物质(chemicals)
　　- （Stage 2）清洁水被抽水机（pump)转送到电热器(electric heater)加热→随后经过冷却管(cooling pipe)→随后加入二氧化碳(carbon dioxide)，制成碳酸水(carbonated water)

　　Body paragraph 2

　　Afterwards, the carbonated water is mixed with coloring, syrup and flavors in a tank. Before the whole process comes to an end, the resulting mixture is passed through a second filter prior to canning and bottling. Finally, the filled bottles and cans are packaged into boxes, which are then transported by trucks to supermarkets for sale.

　　思路要点：
　　-（Stage 3）碳酸水中会加入着色剂(coloring)、糖浆(syrup)、调味料(flavor)在混合管(mixing tank)中混合
　　-（Stage 4）混合后的碳酸水会再次被过滤，随后装进瓶子(bottles)和罐子(cans)
　　-（Stage 5）分装好的碳酸水会被打包装进盒子里，随后运输到超市售卖

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