您要查找的是不是：
- The Underground Magnetic Field 井下磁场
- The force exerted by a magnetic field. 力由磁场施加的力。
- The lines of force of a magnetic field. 磁力磁场的磁力线
- It shows the presence of a magnetic field. 这表明有磁场存在。
- There will be the underground level. 地图有地下层次。
- Do You Still Remember the Underground Age? 是否还记得那段地下的青春期?
- He regains his senses in the underground prison. 意识回复的时候他已经在地牢里了。
- A purp was sleeping in the underground aisle. 在地铁过道酣睡的小狗狗。
- We travelled across London on the underground. 我们乘地铁穿过伦敦。
- Where is the underground entrance? 地铁入口在哪里?
- The underground can start and stop quickly. 地铁启动和停止很快。
- The underground videotape was widely circulated. 目前在黑市上，这盘录像带已经传开了。
- Inside the underground palace, it is very cold. 地下宫殿里面冷森森的。
- Can Magnetic Field Drill through a Piece of Iron? 磁场能穿过铁片吗?
- The string is in a magnetic field. 振动弦处于磁场之中。
- He joined the underground to fight against the fascists. 他参加了地下组织与法西斯作战。
- I obtained it for one pound in the underground. 这是我在地铁花一英镑买来的。
- The class of phenomena exhibited by a magnetic field. 磁性磁场显示的一组现象
- They dived into the Underground to escape the rain. 他们急忙钻进地铁避雨。
