动词短语
中文翻译:双重投递
同义词:
['double the amount', 'double up on']
例句:
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1. We need to double the number of volunteers for this event.
我们需要为这次活动增加一倍的志愿者。
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2. The company doubled its profits last quarter.
该公司上个季度的利润翻了一番。
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3. They doubled back after they left the park.
他们离开公园后,又折返回来。