a lifetime of service的用法和样例：
- Any unbiased observer would see his career as a lifetime of service to his country.
- He had a lifetime of frustrations.
- Even as he who came here tonight and honored me,as he has honored you,the Democratic party by a lifetime of service and bravery that will find him an imperishable page in the history of the Republic and of the Democratic Party President Harry S.Truman.
- Here's wishing you both a lifetime of happiness.
- Was a promise of a lifetime of love.