Definition
to be exceptionally beneficial or advantageous for someone.
对（某人）非常有益处
Taking a vacation and stepping away from work for a while would do you a power of good.
休假并暂时远离工作会对你非常有益。
I think you should exercise more; it will do your health a power of good.
我觉得你应该多运动；这会对你的健康非常有益。
Spending time in nature does my mental health a power of good.
在大自然中度过时间对我的心理健康非常有益。