From a survey, they had a list of each employee's friends.

通过调查，他们获得了每个雇员的朋友名单。

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This year, the survey included for the first time a list of the safest cities.

今年该调查首次发布了最安全城市榜单。

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This year, the survey included for the first time a list of the safest cities.

今年该调查首次发布了最安全城市榜单。

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