在石油行业，通常按照河流区域的划分，将石油公司划分为上游、中游和下游。
Within the industry, different parts of oil companies are descried as sections of a river: upstream, midstream and downstream.
正如名字所示，中游的公司处在上游开采原油和天然气的公司和下游分销产品的公司之间。
As the name suggests, midstream companies sit between upstream companies which actually extract the oil or natural gas and downstream companies which distribute the commodity.
该公司包括三个环节：上游，中游和下游。
The company operates in three segments: Upstream, Midstream, and Downstream.
我们经常把一条河分成三部分：上游、中游和下游。
We often divide a river into three parts, that is the upper, middle and lower reaches.
零售业是国民经济重要的组成部分，它处于产业链的中游，连接着上游的生产企业和下游的消费者，其发展趋势通常反映一个国家总体经济的走向。
Retail is one of the most important sections of the national economic, and in the middle of the industrial chain, which links the factories and consumers.
零售业是国民经济重要的组成部分，它处于产业链的中游，连接着上游的生产企业和下游的消费者，其发展趋势通常反映一个国家总体经济的走向。
Retail is one of the most important sections of the national economic, and in the middle of the industrial chain, which links the factories and consumers.
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