名词
中文翻译：自我牺牲
同义词：
['selfless', 'self-denial', 'sacrifice']
例句：
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1. He gave up his vacation to help his sick mother.
他放弃了假期来帮助生病的母亲。
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2. She made a selfless decision to donate her kidney to a stranger.
她做出了无私的决定，将自己的肾脏捐赠给了一个陌生人。
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3. The teacher sacrificed his time to ensure the students' success.
老师牺牲了自己的时间以确保学生们的成功。