General McChrystal said the key objectives are to improve security and transfer responsibility to the Afghan forces "as rapidly as conditions allow."

VOA: standard.2009.12.03

In other words, we need criteria for equilibrium under more general conditions than the ones that we've dealt with so far, than the one set of conditions that we've dealt with so far, which is isolated system.

换句话说,相比我们目前为止,考虑和处理的问题，我们需要更一般条件下平衡的判据,我们目前，只考虑了孤立系统。

麻省理工公开课 - 热力学与动力学课程节选

The U.S.and NATO commander in Afghanistan, Army General Stanley McChrystal, has said conditions in Afghanistan are deteriorating.

VOA: standard.2009.09.16