second wind
noun
in sing.
1- a person's ability to breathe freely during exercise, after having been out of breath（一阵喘息后）恢复正常呼吸; 换气。
1.1
- a new strength or energy to continue something that is an effort后续精力; 后续力量：
she gained a second wind during the campaign and turned the opinion polls around.
她在竞选中重振旗鼓, 扭转了民意测验的不利局面。