动词
中文翻译：双重的
同义词：
['augment', 'double up', 'multiply']
例句：
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1.The price of the product has doubled since last year.
该产品的价格自去年以来翻了一番。
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2.They doubled their efforts to finish the project on time.
他们加倍努力以按时完成这个项目。
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3. The company doubled its profits in the past year.
该公司去年的利润翻了一番。