今天我们要学的词组是backup。作为形容词，backup的意思是后备，替代。媒体报道说，布什总统实施新的伊拉克计划之后，一些州长在白宫询问布什和参谋长联席会议主席Peter Pace有没有后备计划。A group of governors asked President Bush and chairman of the Joint Chief of Stuff Peter Pace about their backup plan for Iraq。州长们后来说，他们认为白宫并没有后备计划。许多人认为伊拉克计划很可能失败，政府必须要有后备的战略。The United States must have backup strategy for Iraq。今天我们学习的词组是backup, backup, backup.
