形容词
中文翻译：额外的
同义词：
['supplementary', 'supplementing']
例句：
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1.I need an additional pair of shoes for my trip.
我需要一双额外的鞋子来我的旅行。
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2. The additional information will be helpful for understanding the problem.
额外的信息将有助于理解这个问题。
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3. We added an additional charge to the total cost.
我们额外增加了总费用。