名词
中文翻译：Unknown
同义词：
['commonplace', 'mediocre', 'average', 'ordinary']
例句：
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1. The book is filled with commonplace observations.
这本书充满了陈词滥调。
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2. He was a mediocre writer, but he had a good sense of humor.
他是一位平庸的作家，但他有幽默感。
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3. She has an average height and weight for her age.
她的年龄和身高体重都处于平均水平。