名词
中文翻译：Unknown
同义词：
['indicator', 'signifier', 'symbol']
例句：
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1. The mean indicator of a company's performance is its stock price.
公司业绩的衡量指标是其股价。
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2. The mean indicator of the economy's health is employment levels.
经济健康状况的衡量指标是就业水平。
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3. The mean indicator of happiness is spending time with loved ones.
幸福感的衡量指标是与亲人共度时光。