名词短语
中文翻译：交易撤销
同义词：
['cancel', 'refund', 'reverse transaction', 'rollback']
例句：
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1. Thecompany decided to cancel the meeting due to unexpected rain.
由于意外的雨，公司决定取消会议。
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2. After the transaction was completed, the customer received a refund for their purchase.
交易完成后，客户收到了他们的购买退款。
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3. The bank rolled back the transaction after discovering an error in the system.
银行在发现系统错误后撤销了交易。