问题补充：
英语翻译In this world,nothing belongs to you forever,except your own skill.这是我综合其他答案的句子,能更精炼不?恰当么?
答案：
其实楼主翻译的很好了.Nothing belongs to you forever in the world,except your skills!这样稍微调整一下,语气可以更强烈些,own似乎可以省略,skill可以用复数.
======以下答案可供参考======
供参考答案1:
In the world, nothing owned by you, but your skill.
