名词
中文翻译：扩张率
同义词：
['growth rate', 'expansion rate', 'growth rate']
例句：
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1. The company's expansion rate has been slowing down recently.
这家公司的扩张速度最近在放缓。
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2. The economy is expanding at a rate of 5% per year.
经济以每年5%的速度扩张。
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3. The population growth rate is higher in urban areas compared to rural areas.
与农村地区相比，城市地区的人口增长率更高。