Abstract: There are three basic implementation paths for the U.S. pivot to Asia Pacific, that is, the economic path, the diplomatic path and the military path. However, the tension between available strategic resources and the ambitious strategic objectives of the United States poses restrictive factors to these paths. Understanding these factors enables us to take a more comprehensive view of the trends of U.S. strategies so as to maintain rational analysis of their possible effects on Sino-U.S. relations and Asia Pacific situations.

Key words: pivot to Asia Pacific , implementation paths , restrictive factors , TPP , bipolar reliance

摘要： 经济、外交和军事是美国“重返亚太”战略的三个基本实施路径。但由于美国可用的战略资源与其宏大的战略目标之间存在紧张关系，决定了这些实施路径带有先天的制约性因素。认清这些制约性因素，有助于我们更加全面地看待美国的战略动向，更加理性地分析它对中美关系和亚太局势可能造成的影响。

关键词: 重返亚太 , 实施路径 , 制约性因素 , TPP , 二元依赖