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Please set down your belongings and step through the metal detector/security gate.
请您拿出随身物品，并通过金属探测器/安检门。
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The detector only activates security lights when an event has occurred.
当一个事件发生后该探测器仅激活安全灯。
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The detector only activates security lights when an event has occurred.
当一个事件发生后该探测器仅激活安全灯。
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