evacuation alarm
... 疏散距离：evacuation distance 疏散警报：evacuation alarm 疏散滑槽：evacuation chute ...
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洛杉矶国际机场8月28日的假枪击警报引发了旅客恐慌，机场进行了疏散，也有超过250架班机延后起飞。
False reports of gunfire at Los Angeles International airport on Aug. 28 caused panic among travelers, led to the evacuation of the airport and resulted in more than 250 flight delays.
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