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 with the fragile glassware.
对于易碎的玻璃器皿应该格外小心。
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3. Extra time was given for the presentation due to technical difficulties.
由于技术问题，演讲需要额外的时间。