[] an energy or a force, particularly one that helps to increase or improve sth 动力；势头；契机◆ The economic recovery is gaining momentum. 经济复苏的势头越来越强劲。◆I'm afraid our sales team is beginning to lose momentum. 恐怕我们的销售团队正开始失去动力。⨁to pick up / gain / gather / lose / maintain momentum 增加／获得／聚集／失去／保持势头