名词
中文翻译：普通的
同义词：
['average', 'ordinary', 'common']
例句：
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1.The average salary for a software engineer is $70,000 per year.
软件工程师的平均年薪是7万美元。
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2.She works as a secretary in an office and has a run-of-the-mill job.
她在一家办公室担任秘书，工作普通。
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3. The average lifespan of a dog is about 10 years, but some run-of-the-mill dogs can live up to 15 years.
狗的平均寿命大约是10年，但一些普通的狗可以活到15年。