The tide is affected by the magnetic pull of the moon.

潮汐会受到月球磁场拉力的影响。

That provided them a push to migrate from the Indus Valley, and also a pull, a magnetic pull toward the foothills of the Himalayas, where the winter rain increased.

这给了他们从印度河流域迁徙的动力，也吸引着他们向喜马拉雅山脚下移动，那里的冬季降雨量增加了。

For the likes of Mr Bernanke, the ultimate determinant of interest rates is the global balance between savings and investment which, over time, exerts a magnetic pull on central bankers trying to hit inflation targets.

对于伯南克这样的人来说，利率的最终决定因素是全球储蓄和投资之间的平衡，随着时间的推移，这种平衡会对试图实现通胀目标的央行官员产生磁铁般的吸引力。