(in the United States) a state where the number of Democratic and Republican voters is about the sam

中文解释

（美国总统大选时的）战场州，指支持民主党和支持共和党的选民数量大致相当的州，其投票结果对大选结果影响重大。 The vice president went on a campaign tour of the battleground states of North Carolina and Virginia. 副总统去了北卡罗来纳州和弗吉尼亚州这两个战场州做竞选宣传。