动词
中文翻译：回报
同义词：
['repay', 'reimburse', 'return']
例句：
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1.The company will pay back the investors' money in full after a year.
公司将在一年后全额偿还投资者的钱。
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2. He decided to pay back his debts before he retired.
他在退休前决定偿还他的债务。
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3.The teacher promised to pay back the students' hard work with better grades.
老师承诺用更好的成绩来回报学生们的辛勤工作。