In other words, there may be times when a more powerful China is good for the US (and for the world). For example, the US should be eager to see China increase its ability to control its world-leading greenhouse-gas emissions.
奥巴马2010年国家安全战略指出美国应当将实力视为正和而非零和。换句话讲，中国强大有时可能对美国（和世界）都有好处。比如，美国应当乐于见到中国对其领先世界的温室气体排放加强控制。