名词
中文翻译：上升期
同义词：
['uptrend', 'upturn']
例句：
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1. The stock market is in an up-swing now.
股市现在正处于上升期。
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2. The economy is on an up-swing, and people are optimistic about the future.
经济正在上升，人们对未来持乐观态度。
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3.The company's revenue has been on an up-swing since the new product launch.
自从新产品发布以来，公司的营收一直在上升。