名词
中文翻译：Unknown
同义词：
['double', 'multiply', 'double down', 'double up']
例句：
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1. The company doubled its profits last quarter.
这家公司上个季度的利润翻了一番。
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2. He doubled his efforts to finish the project on time.
他加倍努力以按时完成这个项目。
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3. They decided to double their investment in the new business.
他们决定加倍投资于新的业务。