Translation of "Obsolete" in Chinese

Since communism became obsolete and the dictatorship of the proletariat is out of date, capitalism proves to be the best so far, even though it itself is still a threat for humanity.

共产主义失败了，而无产阶级专政现在也经被淘汰了。虽然资本主义逐渐取而代之，但现在的资本主义对于人类还是一个威胁。