Because the needle of a compass is magnetised, it's attracted to the magnetic pole – the points near the North and South Poles where the Earth's magnetic field is concentrated.

因为指南针的指针是有的，所以它被极。地球的极在北极和南极附近，那里力最强。

Though oxygen cannot be magnetised permanently in the way that elements like iron can, it is attracted by magnetic fields.

氧气虽然不能像铁那样被永久化，但它还是会被场。

A magnetic field is used to magnetise the substance creating a magnetic material that can be printed into any shape And, the direction of the magnetic field can be changed during printing.

一个场被用来化物质， 从而创造出一种可以打印成任何形状的材料。而且， 在打印过程中可以改变场的方向。