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任何一种打法和技术,它可能在一段时间里是世界上最先进的,甚至领导着技术发展的新潮流。如果它停滞不前,慢慢就可能由先进变成落后,最终可能被淘汰。 乒乓球项目也是如此。
Any kind of play and technique that may be the most advanced in the world for some time and even lead the new wave of technological development. If it stagnates, it may gradually become backward from advanced and eventually may be eliminated. The same is true for table tennis.