磁场

例句：

1. 1. The magnetized iron bar is attracted to the north pole.
   被磁化的铁棒被吸引到北极。
2. 2. The scientist used a magnet to detect the location of the lost treasure.
   科学家使用磁铁来探测丢失的宝藏的位置。
3. 3. The magnetic field of the Earth affects the movement of charged particles in space.
   地球的磁场影响太空中带电粒子的运动。