trip ticket system 运载记录制度
trip-ticket system
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
In addition, Mr. Abdulmutallab's cash purchase of a round-trip ticket didn't trigger any secondary screening, calling into question the efficacy of the system that is supposed to spot passengers who are acting suspiciously and may be threats.
WSJ: The Middle Seat | How to Improve Travel in 2010
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