The magnetic charge imparted to the spike would be weak, the book said, but enough to pick up a few iron filings.

书上说，磁力虽弱，却足以吸起几个碎小的铁屑。

It also has a property called adhesion where it wants to stick to other things because of this kind of magnetic charge.

因为这种磁荷，水还有一种叫做附着力的特性，它想要粘在其他东西上。

The result is a material with a non-uniform polarity meaning each part of the structure can respond differently to a magnetic charge.

结果是一种具有不均匀极性的材料，这意味着结构的每个部分都可以对磁荷有不同的反应。