以下为句子列表：
英文: In the 1960's, Bell Telephone Laboratories had occasion to investigate lightning transient damage that occurred at a number of their highly automated telephone Central Office sites.
中文: 在60年代，贝尔实验室曾对它们一些高度自动化的电话中心现场因雷击电涌造成的损坏进行了调查。
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