不遗余力地

spare no expense───不惜工本；不惜费用

meant was that she had spared no efforts in the semifinal.───意思是她已在半决赛中竭尽全力。

Over the past decades, this company has spared no efforts in the study of plastic paint, supplementary materials and developed mother color materials for rubber, EVA foaming.───公司经过数十年不懈的努力，致力于对塑胶染料、颜料、辅助材料行业的研究，开发应用于橡胶高浓度色母胶，EVA发泡用高档色母粒。

He spared no efforts in his studies.───他在研究方面不遗余力。