Magnetic field
01
磁场, 磁区
an invisible area around a magnetic object where magnetic forces can attract or repel other objects
例子
The Earth has a magnetic field that helps guide the navigation of compasses.
地球有一个磁场，有助于指南针的导航。
When electricity flows through a wire, it creates a magnetic field around the wire.
当电流通过电线时，它会在电线周围产生磁场。
