Earlier this month Syria and Turkey signed what is being described as an historic agreement, which allows visa-free travel between the two countries.

VOA: standard.2009.10.27

I basically gave them free ray at the beginning, so they work in small groups, and travel from site to site.

在最初，我给了他们充分的自由，孩子们组成学习小组，在各地游览。

麻省理工公开课 - 媒体、教育、市场课程节选