Authorities have boosted security in Islamabad and are believed to be staging large container trucks to block major roads into the city.

VOA: standard.2009.03.12

You have a nice grid pattern and you can use a city block metric to add up the number of blocks between people's doors.

整个城市呈格网状,你可以数数,人们相隔多少个街区。

耶鲁公开课 - 心理学导论课程节选

A key stumbling block was Kirkuk. Ethnic Kurds would like to see the oil-rich city under the control of the Kurdistan Regional Government.

VOA: standard.2009.11.09

It wasn't just the beauty of the polished stone block walls or the fact that this abandoned city sits atop a narrow ridge more than 2400 meters above sea level.

VOA: standard.2009.12.15