一种力量是善良的，通过睡梦向人们传递希望与力量；

One force delivers hope and strength through good dreams;

youdao

守护神是一种正面力量，它所倡导的东西正是摄魂怪的食粮——希望、快乐、活下去的愿望。

Patron saint is a positive force, it is something initiated by Dementors food - hope, happiness, the desire to live.

youdao

It's a powerful force that goes behind the scene and I hope we can draw that out in this course.

它是一种潜藏在暗处的强大力量,希望通过此课可以窥得其冰山一角

耶鲁公开课 - 金融市场课程节选