英语单词讲解 unit 27
An energy crisis is any great bottleneck (or price rise) in the supply of energy resources to an economy. In popular literature though, it often refers to one of the energy sources used at a certain time and place, particularly those that supply national electricity grids or serve as fuel for vehicles. There has been an enormous increase in the global demand for energy in recent years as a result of industrial development and population growth. Since the early 2000s the demand for energy, especially from liquid fuels, and limits on the rate of fuel production has created such a bottleneck leading to the current energy crisis.
The Uruguay Round was the 8th round of multilateral trade negotiations (MTN) conducted within the framework of the General Agreement on Tariffs and Trade (GATT), spanning from 1986 to 1994 and embracing 123 countries as "contracting parties". The Round led to the creation of the World Trade Organization, with GATT remaining as an integral part of the WTO agreements. The broad mandate of the Round had been to extend GATT trade rules to areas previously exempted as too difficult to liberalize (agriculture, textiles) and increasingly important new areas previously not included (trade in services, intellectual property, investment policy trade distortions). The Round came into effect in 1995 with deadlines ending in 2000 (2004 in the case of developing country contracting parties) under the administrative direction of the newly created World Trade Organization (WTO).
Surplus value is a central concept in Karl Marx's critique of political economy. Marx did not himself invent the term, he developed the concept. "Surplus value" is a translation of the German word "Mehrwert", which simply means value added (sales revenue less the cost of materials used up). Conventionally, value-added is equal to the sum of gross wage income and gross profit income. However, Marx's use of this concept is different, because for Marx, the Mehrwert refers to the yield, profit or return on production capital invested, i.e. the amount of the increase in the value of capital. Hence, Marx's use of Mehrwert has always been translated as "surplus value", distinguishing it from "value-added". According to Marx's theory, surplus value is equal to the new value created by workers in excess of their own labour-cost, which is appropriated by the capitalist as profit when products are sold.