形容词
中文翻译：中间的
同义词：
['median', 'central']
例句：
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1.The team's performance was mediocre, with only one out of ten players scoring.
该队的表现平庸，只有十分之一的球员得分。
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2. The median age for first marriage in the United States is 30 years old.
美国首次婚姻的平均年龄是30岁。
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3.The median income level for a family of four is $50,000 per year.
一个四口之家的平均年收入为5万美元。