"main contradictions" is correct and usable in written English.
You can use it to refer to the most important opposing elements or ideas in a situation or concept. For example, "The main contradictions in capitalist society are the conflict between wealthy owners and the laborers in the working class."
The film makes us very aware of Brand's precocious talent and highlights one of the main contradictions about him as a personality – namely that he seems utterly self-obsessed and yet, from an early age, has had a burning sense of indignation about injustices suffered by others.
There are three main contradictions in the very structure of the Federal Reserve.
Finally, Dennis O'Rourke closes this special issue with a paper aimed at meticulously deciphering the main contradictions and concordances in American colonization models.
Last century's Cold War was based on three necessary conditions: Mutual nuclear deterrence and ideological conflicts were the main contradictions, while proxy war was the main means of competition.
The main contradictions focus on if and which of quinolinic acid, 3-OHGA, or GA excited NMDA receptors or produced a synergistic excitation [ 35, 36], as well as whether NMDA receptor antagonists or non-NMDA receptor antagonists inhibited the neurotoxic effects of GA and 3-OHGA [ 37].
That, of course, takes us straight to the main contradiction: any inhibition on what a paper can or cannot publish must amount to a denial of press freedom.
The main contradiction today is between the possibility of free, abundant goods and information; and a system of monopolies, banks and governments trying to keep things private, scarce and commercial.
A main contradiction is between the state-owned and privatised enterprises.
The fund flow can directly and effectively decrease the management entropy, relieve the main contradiction in Venezuela, but it is a quite limited role because of Venezuela government's low credit rating.
To reach this condition, strong NEIFs from outer system need be introduced: (1) The fund flow can directly and effectively decrease the management entropy, relieve the main contradiction in Venezuela, but it is a quite limited role because of Venezuela government's low credit rating.
Their arguments centered on the position that class, not race, is the main contradiction.
