reset magnet

例句：

1. 1.The engineer used a special tool to reset the magnet on the machine.
   工程师使用特殊工具来重置机器上的磁铁。
2. 2. After the power outage, we had to reset our home's security system.
   电力中断后，我们必须重置我们的家庭安全系统。
3. 3.The scientist discovered that the magnet could be reset by adjusting its magnetic field.
   科学家发现，通过调整磁场，可以重置磁铁。