动词
中文翻译：加倍
同义词：
['increase', 'double up']
例句：
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1. Theprice of the product has doubled sincelast 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 finishthe project on time.
他们加倍努力，按时完成这个项目。
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3. The company doubled itsprofits in the past year.
该公司去年的利润翻了一番。