State-owned investment company Dubai World,which manages much of the city-state's massive development projects, is asking creditors for a delay in repaying about $60 billion in debt.

VOA: standard.2009.11.27

Aristotle lived at the virtual cusp of the world of the autonomous city-state of the Greek polis.

亚里士多德住在可说是希腊城邦世界中,最顶尖的自治城市。

耶鲁公开课 - 政治哲学导论课程节选

Speaking of up-and-coming jazz ensembles,10 bands were selected for a U.S.State Department world tour.

VOA: standard.2009.12.25