名词
中文翻译：Unknown
同义词：
['1. pen', '2. coin', '3. bill']
例句：
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1. 笔
pen
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2.币
coin
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3. 比利
billy
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1.She bought a new pen for her son's birthday.
她为儿子的生日买了一支新的钢笔。
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2.The old coin collection is worth thousands of dollars.
这个旧硬币收藏价值数千美元。
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3. The boy named Billy won the first prize in the science competition.
那个名叫比利的男孩在科学竞赛中赢得了一等奖。