他们是极其重要的,酒店运营商的计划者会议和习俗,以及对航空公司和其他运输操作。
They are extremely important to hotel operators, to planners of conferences and conventions, and to the airlines and other transport operators.
他们是极其重要的,酒店运营商的计划者会议和习俗,以及对航空公司和其他运输操作。
They are extremely important to hotel operators, to planners of conferences and conventions, and to the airlines and other transport operators.
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