The goal is to stop the cycle of easing rules on banks in good times and tightening them only after a crisis.

VOA: special.2010.09.17

Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.

细胞生命期可以停止在细胞周期的某个点,并保持很长时间

耶鲁公开课 - 生物医学工程探索课程节选