名词
中文翻译：Unknown
同义词：
['common', 'general', 'norm', 'standard', 'typical']
例句：
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1.The average temperature in the city is around 20 degrees Celsius.
这个城市的平均温度大约是20摄氏度。
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2.The company's average annual revenue has increased by 20% over the past five years.
该公司过去五年的平均年收入增加了20%。
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3. The average lifespan of a human being is about 75 years.
人类的平均寿命大约是75岁。