名词
中文翻译：双数
同义词：
['pair', 'pair of', 'two-numbered']
例句：
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1. The number of students in the class is evenly divided into two groups.
班上的学生人数被平均分成两组。
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2. He has a pair of glasses that match his shirt color perfectly.
他有一副眼镜，颜色和衬衫完美匹配。
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3. Two-numbered numbers are added together to find the total.
两个数字相加得到总数。