爱像圆周率，无限不循环。
上个月，研究者们已再次注入粒子，但直到这周，那批刚注入的质子束才沿着对撞机的圆周完整地急速循环。
Researchers re-injected particles late last month, but it was not until this weekend that bunches of protons were once again whizzing around the collider's entire circumference.
上个月，研究者们已再次注入粒子，但直到这周，那批刚注入的质子束才沿着对撞机的圆周完整地急速循环。
Researchers re-injected particles late last month, but it was not until this weekend that bunches of protons were once again whizzing around the collider's entire circumference.
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