名词
中文翻译：空余额
同义词：
['balance', 'zerobalance']
例句：
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1. The company's financial report showed a null balancein its cash flow statement.
公司的财务报告显示现金流表中的现金为零。
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2. Thebank had a null balancedue to the lack of deposits.
由于存款不足，银行出现了零余额。
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3. Theaccountant was asked to balancethe books and check for any nullbalances.
会计被要求核对账目并查找任何零余额。