短语
中文翻译：毫不吝啬
同义词：
['do without', 'spare no effort']
例句：
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1. He spared no pains to help his friend in need.
他不遗余力地帮助朋友。
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2. She spared no pains to ensure the success of her project.
她不遗余力地确保项目的顺利进行。
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3. The team spared no pains to win the championship.
团队不遗余力地赢得了冠军。