查询词典 proof by contradiction

464 A tautology's truth is certain, a proposition's possible, a contradiction's impossible.

4.464 重言式的真是确定的，命题的真是可能的，矛盾式的真是不可能的。

It is clear that the logical product of two elementary propositions can neither be a tautology nor a contradiction.

很清楚，两个基本命题的逻辑积可以既不是重言式也不是矛盾。

The burden of present farmer of cardinal contradiction is the distribute tax and disintegrated farmer.

平摊的税费与农民分化之间的矛盾是当代农民负担问题中的基本矛盾。

In 1978-1985, the country adjustment the development policy of the city and countryside, the key of finance and taxation policy was the farmer. In 1985-1990, the country tried hard to coordinate the contradiction of the city and countryside development and took "the Three Chooses" as a center of gravity. In 1990-2002, the disparity of the city and countryside was more and more big, the country had to standard farmer tax revenue; transform administrative fees into taxes in order to adjust the harmonious of the city and countryside relation. In 2002-2006, the country alleviated gradually the contradictory of the city and countryside through the reform of agricultural tax and administrative fees. Along with entering WTO, the uncoordinated relations of the city and countryside faced a huge challenge.

改革开放以后，国家在统筹城乡关系上经历了四个阶段：1978—1985年，国家对城乡发展政策进行调整，财税政策重点向农民倾斜；1985—1990年，国家以治理"三乱"为重心，力图协调城乡发展矛盾；1990—2002年，城乡差距越来越大，国家采取了规范农民税收、"费改税"等措施，试图调整不和谐的城乡关系；2002—2006年，国家通过农村税费改革、取消农业税等政策措施，逐步缓解了城乡矛盾。

Luo Lung-chi's political thought developed when there were sharp conflict betweenrevolutionary and anti-revolutionary at home,increasingly intense class contradictionand national contradiction,communist movements raging tempestuously abroad,andflowage of capitalist progressive trends of thought.

罗隆基的政治思想，是在国内革命和反革命尖锐对立，阶级矛盾和民族矛盾不断激化，国际上共产主义运动风起云涌，各种资本主义改良思潮泛滥的背景下形成的。

Most importantly, it promotes us to pay more attention to the contradiction and tensility in the process of reading.

他新鲜乃至精细的"解构"模式，不仅从根本上颠覆了传统语言观和批评模式，也在一定程度上拓宽了当代学术的研究视野。

However, along with the rapid development of urbanization trend, the contradiction between the urbanization and the land utilization is getting more and more obvious and tensity.

城市化是工业化发展的必然要求和必然结果，城市土地集约利用是城市发展的必然要求。

The practical problem lies in when these people attempt to turn to the secondary or the tertiary-industry to obtain employment, they have to face the contradiction between the farmer's existing manpower capitals and"knowledge-based economy"which demands more skillful practitioner.

现实的困境在于农业剩余劳动力向现代第二、三产业转移就业时，又面临农民现有人力资本与"知识经济"条件下就业岗位需求之间的矛盾。

But first-class and inherent contradiction restricted sheet of region economy structure thalassic area collaboration develops deep further.

但地区经济结构单一等内在矛盾制约了海湾区域合作进一步深入发展。

In China today, thc contradiction between market and moral has aroused general attention.

在当代中国，市场与道德的矛盾已引起广泛关注。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。