How do I demagnetize tape heads ?

我如何消磁音带头？

Demagnetize that same piece of steel and it will be powerless to attract or lift even a feather's weight.

如果将它的磁性消退，那么它连一根羽毛重量的铁块都吸不住。

If you are in a company, you want to know whether this is a career builder or a sure fire way to have the security people escort you from the property and demagnetize your company identification card.

如果你在公司上班，你要知道这里是建功立业的地方，还是注定要让保安把你送出门去，注销你的公司身份证的地方。