And once each month, mail would arrive in California after a slow trip by wagon from Saint Louis,Missouri.

VOA: special.2009.05.28

So the problem here, roughly, is given, a number of cities, and say the cost of traveling from city to city by airplane, what's the least cost round trip that you can find?

基本上就是一个这样的问题,你被告知了一些城市,以及在城市之间坐飞机旅行的花费,那一条是你们能找到最短往返路径？

麻省理工公开课 - 计算机科学及编程导论课程节选

By the end of the trip, Margaret Bourke-White had traveled eight thousand kilometers throughout the Soviet Union.

VOA: special.2009.05.10

Reduce waste by bringing food and drinks for the trip in re-usable containers.

VOA: special.2009.06.19

Clinton ended her three-day trip to Pakistan Friday by meeting leaders from the volatile tribal areas and the North West Frontier Province.

VOA: standard.2009.10.30

So far,much of his week-long trip to Africa has been dominated by his rejection of condoms as a way to fight AIDS.

VOA: standard.2009.03.20

On a recent trip to India, British Prime Minister David Cameron justified the Afghan war by saying the troops are keeping Britain safe from terrorism.

VOA: standard.2010.08.04

(Speaking) Manjushree Badlani said her departure from Paris was delayed by about an hour, but said her trip through customs at Dulles only delayed her by about seven minutes.

VOA: standard.2010.01.05

Mr.Zardari has been criticized for staying at a family chateau in France and in luxury hotels in Britain during this trip, while millions back home have been affected by the flooding.

VOA: standard.2010.08.06

That set turned into a benefit for his family, with Big Star's remaining members joined by Mike Mills of R.E.M,M Ward, Amy Speace and others for a trip through the Big Star catalog.

VOA: standard.2010.04.07

On an Africa trip last month, Clinton met with women and girls raped and otherwise abused by soldiers and irregular forces in the conflict in the eastern part of the Democratic Republic of the Congo,the DRC.

VOA: standard.2009.09.25

President Zardari has been harshly criticized by some within the Pakistani community in Britain, as well as from back home, for taking this trip - especially at a time when Pakistan is experiencing the worst flooding in decades.

VOA: standard.2010.08.06

The overseas trip is the first by Secretary of State since she fractured her elbow in a fall last month, and it includes an ambitious agenda in India, where she aims to solidify a strategic partnership begun with the 2005 U.S.-India nuclear cooperation accord.

VOA: standard.2009.07.15