... passenger conveyor 乘客输送机 passenger detector 乘客探测器 passenger hoist 载人吊重机 ...
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photo-electric passenger detector 光电乘客监测器
electric passenger detector 光电乘客监测器
passenger detector
乘客探测器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
If a passenger sets off the metal detector, engages in suspicious behavior, or is listed on a watch list, secondary screening would be appropriate.
CNN: Don't let security scanners erase our privacy
In September, Argenbright employees left a metal detector unattended, allowing at least one passenger to walk to a US Airways gate without screening.
CNN: License suspended for Boston Logan security firm
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