名词
中文翻译：双点尖头
同义词：
['double-pointed needle', 'double-pointed pin']
例句：
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1. The dress hasa double-pointed tack at the hem.
这件衣服的下摆有一个双点尖。
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2. The tailor used a double-pointed tack to finish the seams.
裁缝用一个双点尖来缝制边缘。
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3. She held the double-pointed tack in her hand.
她手里拿着一根双点尖。