Bystanders gaping at a giant screen watched physicists hunched over computers at the CERN Control Center inject the first beam of protons into the Large Hadron Collider.

• 旁观者盯着大屏幕,密切注视着欧洲粒子物理研究所控制中心围坐在计算机旁的物理学家们，向大型强子对撞机发射第一束质子束。