名词
中文翻译：零数
同义词：
['zero', 'fractional number']
例句：
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1. The sales figure for the quarter was a zero number.
这个季度的销售数字是个零。
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2. The price is 50% off, but that's only a fractional discount.
价格打五折，但那只是小折扣。
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3. We need to round down to the nearest whole number when we divide by 10.
当我们除以10时，我们需要向下取整。