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欧洲核研究中心（CERN）曾于1987年建了世界上最大的粒子加速器——正负电子对撞机（LEP），该装置位于瑞士日内瓦附近的地下100米处。但是随着科学技术的发展，正负电子对撞机已不能满足粒子物理研究的需要，决定于2000年10月拆除该装置。早在1994年12月就决定建造一座大型强?
The European Center for Nuclear Research (CERN) built the world's largest particle accelerator, the Electron-Electron Positron Collider (LEP), in 1987 and is located 100 meters underground near Geneva, Switzerland. However, with the development of science and technology, the positron-electron collider can no longer meet the needs of particle physics research. It is decided to dismantle the device in October 2000. As early as December 1994 decided to build a large-scale strong?