交通基础设施在整体社会经济中发挥着重要作用。
The traffic foundation plays an important role in the social economy.
统计作为一种科学原理和技术，对社会经济起着举足轻重的工具性作用。
As a scientific theory and technology, statistics is extremely important for the society and economics.
在现代社会经济生活中，合同具有十分重要的地位和作用。
Contract plays a very important role in economic life of modern society.
在现代社会经济生活中，合同具有十分重要的地位和作用。
Contract plays a very important role in economic life of modern society.
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