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The personnel responsible for the maintenance of order shall wear identification marks.
负责维持秩序的人员应当佩戴标志。
youdao
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Maintenance of order is no easy job at this time.
这时候要维持秩序可不是件容易的事。
youdao
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Maintenance of order is no easy job at this time.
这时候要维持秩序可不是件容易的事。
youdao