应该是没有缩写形式
往后余生：The rest of life
如：The rest of my life, if not for you, there is no rest of my life.往后余生,如果不是你,哪还有余生
余生的英文是：the rest of my life，没有缩写。
the rest of:其余的;剩下的
1、I have just met the man I want to spend the rest of my life with我刚刚遇到了我想与之共度余生的男人。
2、I will be deeply grateful to you for your kindness for the rest of my life.您对我的恩情使我终身铭感。
3、I had to make important decisions that would affect me for the rest of my life我不得不作出将影响我后半生的重大决定。
近义词:remaining
adj.剩余的，剩下的
v.保持;剩余，剩下(remain的现在分词);停留，逗留
1、Add the crushed garlic and remaining diced vegetables.加入捣碎的大蒜和剩余的蔬菜丁。
2、Brush the aubergines with oil, add salt and pepper, and bake till soft. Meanwhile, heat the remaining oil in a heavy pan
把油涂在茄子上，加盐和胡椒烤至松软。与此同时，在厚锅中加热剩余的油。
3、He packed his remaining possessions into the trunk.他把剩余的家当儿装进箱子。