形容词
中文翻译：次要的
同义词：
['subordinate', 'secondary', 'tertiary例句：1. The second-grade students are learning to read and write in Chinese.（二年级的学生正在学习汉语读写。）']
例句：
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1. The second-grade students are learning to read and write in Chinese.
二年级的学生正在学习汉语读写。
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2.The second-hand market is a great place to find unique items at a discounted price.
二手市场是发现独特物品并享受折扣的好地方。
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3. The second-generation iPad is more powerful than the first-generation model.
第二代iPad比第一代模型更强大。