The retired Air Force officer says the United States and its allies need to make that kind of decades-long commitment.

VOA: standard.2009.10.16

What might lead to a commitment, ? a decision to make a commitment to make the relationship last?

为什么作出承诺，决定承诺维持双方的关系？

耶鲁公开课 - 心理学导论课程节选