观察员在场以在投票期间维持秩序。

Observers were present to preserve order during the voting.

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Observers were present to preserve order during the voting.

order 在这里是名词,意思是"秩序、次序",指维持某种规范或纪律的状态。在投票场景中,preserve order 特指"维持投票现场的纪律和有序进行"。

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