英语翻译很多国家当前面临人均寿命(lifeexpectancy)上升的重要问题
问题描述：
英语翻译
很多国家当前面临人均寿命(life
expectancy)上升的重要问题
答
many states face the challenge of which life expectancy uprising.
答
life expectancy rising is the elementery problem of many countries recently
答
Many countries are confronted with the rise of life expectancy. 这人觉得重要问题不必译出，否则会显得繁赘。
答
An important problem in many countries is facing rising life expectancy
答
Many countries are facing the problem of life expectancy rising.