名词
中文翻译：屁股钉
同义词：
['butt button', 'butt stud']
例句：
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1.She wore a butt pin on her dress to add some style.
她穿着裙子上别了一颗屁股钉，增加了一些风格。
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2. The butt pin was a gift from her boyfriend.
那个屁股钉是她的男朋友送的礼物。
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3. He put the butt pin in his pocket and walked away.
他把屁股钉放进口袋，然后走了。