形容词
中文翻译：额外的
同义词：
['additional', 'extraordinarily', 'exceptionally']
例句：
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1. The extra effort he put in will pay off big time.
他额外付出的努力将会得到丰厚的回报。
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2. Extra care should be taken when handling fragile objects.
处理易碎物品时应该格外小心。
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3. She was given an extra day off to celebrate her birthday.
她因为庆祝生日而额外获得了一天假期。