上周五科学家试验性的第一次发射了粒子光束 -- 但没有尝试任何的粒子碰撞。
On Friday scientists sent the first beam of particles around the machine - but without attempting any collisions.
雷凡培称，我国计划在2018年前后发射空间站试验性核心舱，2022年前后发射20吨级的组合式空间站。
Lei I said that China plans to launch the experimental core module 2 of its space station around 2018, and the 20 ton combination space station will be sent into orbit around 2022.
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