名词
中文翻译：修改过的账单
同义词：
['modified bill', 'amended bill']
例句：
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1.The company issued a new altered bill to customers for the upgraded service.
公司向客户提供了新的已修改账单，以升级服务。
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2. The bank's altered bill was due to be paid within three months.
银行的已修改账单将在三个月内支付。
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3.The customer disputed the altered bill and demanded a refund.
客户对已修改账单提出异议，并要求退款。