石原豪人(林月光)漫画:哪位高手能帮我翻译这段话

"Person, most precious of is life, life to everybody only have once, this only a life should how degree over?Whenever time recalled part events, can not for spend the best of life in vain but regretfuleply, do not shame because of the has no for;At the time of in the article of deathly, he can say:'one of my life with all energies, all have dedicated to in the world the most magnificent business- behave type solution

“--为人类解”是什么意思，看不懂，没翻译这句
What the person, is most precious is the life, the life only has a
time to each person, this only has how does a life have to pass?
Whenever recollection past events time, can for not waste one's best
years lamented, because of unsuccessfully but is not ashamed; At at
the point of death time, he can say that, ' my entire life and the
complete energy, already have all given to in the world the grandest
enterprise

What the person, is most precious is the life, the life only has a time to each person, this only has how does a life have to pass? Whenever recollection past events time, can for not waste one's best years lamented, because of unsuccessfully but is not ashamed; At at the point of death time, his can say my entire life and the complete energy, all already gave to in the world the grandest matter to solve for the humanity.

这段文字词汇比较简单，主要是应该适当意译，本人译文供参考。
The most precious thing for a person is life,which everyone can only expierence once.How to spend it?
We should spend it like this :when we recollect the passed time,we won't regret for the time wasted,we won't be shameful/ashamed of being incompetent.So when facing the death,we can say :"All my lifetime and energy have been devoted to the most splendid course in the world--the struggle for the liberation of the whole humankind !