名词
中文翻译：积极信号
同义词：
['positive indicator', 'positive feedback']
例句：
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1. The company's stock price is a positive sign for investors.
该公司股价上涨对投资者来说是积极的信号。
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2. The new product launch was a positive sign for the company's future growth.
新产品的推出是公司未来增长的积极信号。
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3. The positive sign of the economy indicates that it will continue to grow.
经济积极的迹象表明，它将继续增长。