Years in development, the Large Hadron Collider in Geneva on Tuesday achieved its first proton-on-proton collisions at higher energy levels than scientists have ever seen before.

经过多年来的研究开发，上周二在日内瓦的大型强子对撞机以前所未有能量水平完成了质子对质子的第一次碰撞。

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By 1976 the drive to convert CERN's new accelerator into a proton-antiproton collider was on, spearheaded by Carlo Rubbia, an Italian experimental physicist.

ECONOMIST: Simon van der Meer