Derived from the transportation service system in real life, arc routing problem have found its application in many fields, and is now becoming the focus of many relevant studies.

车辆弧路径问题产生于现实生活中的交通运输服务系统，有着广泛的应用，近年来逐渐成为研究的热点。

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During the transportation, we rested at the high-speed service areas for 30 minutes every three hours.

在运输过程中，我们每三个小时就在高速服务区休息30分钟。

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First, an individual’s quotation for each tour includes the cost for transportation, accommodation, meals, sight-seeing, tour guides service and round international air ticket.

首先，参加团体旅游的个人其报价均含交通费，住宿费，膳食费，观光费，导游服务费以及双程国际机票。

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We track important developments in homeland security policies and programs in the United States National Guard, the Federal Emergency Management Agency, the United States Coast Guard, U.S. Customs and Border Protection, U.S. Immigration and Customs Enforcement, United States Citizenship and Immigration Services, the United States Secret Service, the Transportation Security Administration, and Civil Air Patrol.

CENTERFORSECURITYPOLICY: Homeland Security

The next wave of 40 stations to come online by the first quarter of 2014 will be heavily used stops in Midtown East and Queens, according to the Metropolitan Transportation Authority, while the service is expected to be rolled out to the remaining stations by 2017.

WSJ: Subway Wireless Options Increase

Initiate procurement of necessary services, according to the UNESCO Administrative Manual, with the competent authorities of the postal service and transportation companies and ensure that prices obtained and services are competitive and satisfactory.

UNESCO: Vacancy : Coordinator, IAP/IAMP (30/4/2011) (EU/VC/ITA/SC/0825 - (P3))