名词
中文翻译：额外的切片
同义词：
['additional slice', 'extra portion']
例句：
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1.We need to make sure we have enough extra slices for the party.
我们需要确保派对有足够的额外切片。
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2. The chef added an extra slice of butter to the dish.
厨师在菜里加了一片额外的黄油。
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3. The pizza was too big, so I had to take an extra slice.
披萨太大了，所以我不得不拿一片额外的。