名词
中文翻译：螺旋式增长
同义词：
['spiral development', 'spiral expansion', 'spiral increase']
例句：
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1. The company's sales have been spiraling upwards since the new product launch.
自新产品推出以来，公司的销售额一直在上升。
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2. The economy is experiencing a spiral growth in productivity.
经济正在经历生产力的螺旋式增长。
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3. The population is expanding at a spiral growth rate.
人口以螺旋式增长的速度增加。