國際政經體系 弱勢單極為主的多極體系 朝向強勢超強轉型的過渡期間 強勢單極為主的多極體系 911悲劇 美臺互信降低 韜光養晦的角色 麻煩製造者 International political and economic system Uni-multipolar international system with a weak superpower Transitional period toward a strong superpower Uni-multi-polar international system with a weak superpower 911 tragedies The decline of U.S.-Taiwan mutual trust Low-profile role Troublemaker