主句核心：
I can allow my mind to play over the problems,and to try to make sure that XXX .
原句
I can therefore allow my mind, (with the experience of a lifetime,)(1) to play over the problems (which beset us)(2) (on the morrow of our absolute victory in arms,)(3) and to try to make sure (with what strength I have)(4)that 【what has gained (with so much sacrifice and suffering)(6) 】(5)shall be preserved (for the future glory and safety of mankind)(7).
分
(1) 插入语
(2)定语从句修饰problems
(3) 时间状语 [on the morrow of]刚…之后
(4)介宾短语作状语,修饰make sure后面的that从句, with what strength 用什么力量
其中 I have 定语从句修饰strength
(5)what 引导的名词性从句what has gained
(6)伴随状语
(7) preserve stn 的状语
当战争获取了最后的胜利,我终于可以任由我的思想蔓延,结合我一生的经历,去思考那些我们困惑已久问题,想去弄明白：我有多大的力量,能让我们用如此多的鲜血和牺牲换来的这一切,可以为了未来了荣耀和人类安宁而永垂不朽.