The team developed a one-step method for magnetization by dipping millions of Spirulina into iron-oxide nanoparticles.

该团队通过将数百藻浸入氧化铁纳米颗粒中，开发了一种一步式磁化方法。

If we pass current through the wire in the opposite direction, the magnetization direction, called polarity, flips the other way.

如果我们以相反的方使电流通过导线，则磁化方（称为极性）会翻转为另一方。

The team had to create a magnetization effect with very little CGI. Stunt coordinator Andy Gill used customized cars with hidden ramps, locking mechanisms, and cables to give the appearance of magnets pulling and releasing other vehicles.

该团队很少的 CGI 来创建磁化效果。 特技协调员 Andy Gill 使带有隐藏坡道、锁定机构和电缆的定制汽车，以呈现磁铁牵引和释放其他车辆的外观。