美国当局在侵朝战争期间，曾精心策划将战争扩大到中国境内的计划，做好了实施这一计划的军事准备。但随着战争的发展，美国决策者除屡次声称要扩大战争外，并没有冒险实施这一计划，却最终形成了在朝鲜打有限战争的政策。美国在侵朝战争中为什么没有将战争扩大到中国境内？本? During the invasion of North Korea, the U.S. authorities carefully planned the plan to expand the war to China and prepared for military preparations for the implementation of this plan. However, as the war progressed, policymakers in the United States, apart from repeatedly claiming to expand the war, did not take the risk of implementing this plan but eventually formed a policy of playing a limited war in North Korea. Why did the United States not expand the war to China in the invasion of North Korea? this?