名词短语
中文翻译：平均水平
同义词：
['average', "average level例句：1. The mean-level of the company's performance has been declining over the past few years.（该公司过去几年的业绩平均水平一直在下降。）"]
例句：
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1. The mean-level of the company's performance has been declining over the past few years.
该公司过去几年的业绩平均水平一直在下降。
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2. The team's performance is on a mean-level compared to last year.
与去年相比，该团队的表现处于平均水平。
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3. The company's mean-level of profitability has remained stable in recent years.
该公司近年来的盈利能力平均水平保持稳定。