This poem cannot be improved upon.
这首诗好得不能再好了。
Few works of art reach such a point that they cannot be improved.
至于人工之物，则很少能够达到完美的顶点而无需改进。
It is fair to protect those attributes that cannot be changed or improved by effort.
对那些无法通过努力改变或提升的属性的保护才是公平。
It is fair to protect those attributes that cannot be changed or improved by effort.
对那些无法通过努力改变或提升的属性的保护才是公平。
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