The Voyager 1 spacecraft took 35 years to leave the Sun's magnetic influence.
旅行者 1 号飞船花了 35 年时间才离开太阳的磁场影响。
英语百科
Magnetic pistol
Magnetic pistol is the term for the device on a torpedo or naval mine that detects its target by its magnetic field, and triggers the fuse for detonation. A device to detonate a torpedo or mine on contact with a ship or submarine is known as a contact pistol.