To find answers to these questions, the team trawled through the data that have accumulated since the Pierre Auger observatory began operating three years ago.
为了找到这些问题的答案，该科研组整理了自皮埃尔奥杰宇宙线观测站三年前工作时收集的到的所有资料。
To find answers to these questions, the team trawled through the data that have accumulated since the Pierre Auger observatory began operating three years ago.
为了找到这些问题的答案，该科研组整理了自皮埃尔奥杰宇宙线观测站三年前工作时收集的到的所有资料。
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