虽然大部分人的关节伤势最后都会复原，但软骨受损却是不可逆的，只会继续恶化。
Though most people eventually recover from joint injuries, damage to the cartilage can't be reversed and can only get worse.
人类每个个体所经历的一切种种都是不可复制也不可复原的。作为人生命的一部分，这种本质性的失去增加了人类的悲剧性。
Whatever men have gone through in the past is forever unduplicatable, as a part of men's life, the lost of the past adds the tragic feelins to human being.
人类每个个体所经历的一切种种都是不可复制也不可复原的。作为人生命的一部分，这种本质性的失去增加了人类的悲剧性。
Whatever men have gone through in the past is forever unduplicatable, as a part of men's life, the lost of the past adds the tragic feelins to human being.
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