The counterterrorism operation in Chechnya was instituted in 1999, when Russia sent troops for the second time since the collapse of the Soviet Union to put down a local separatist movement.

VOA: standard.2009.04.16

So that is really the design for the activity that we have been pursuing since dean done this convened educational technology task force in 1999.

这就是该活动的构思,自从1999年院长建设,教育技术队伍以来,我们一直在追求该目标。

麻省理工公开课 - 媒体、教育、市场课程节选

So that is really the design for the activity that we have been pursuing since dean done this convened educational technology task force in 1999.

这就是该活动的构思,自从1999年院长建设,教育技术队伍以来,我们一直在追求该目标。

麻省理工公开课 - 媒体、教育、市场课程节选