名词
中文翻译：针扣
同义词：
['pin', 'button', 'fastener例句：1. She carefully pinned the letter to her shirt.（她小心翼翼地把信别在衬衫上。）']
例句：
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1. She carefully pinned the letter to her shirt.
她小心翼翼地把信别在衬衫上。
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2.He used a pin cap to hold his hat in place.
他用一个别针别住他的帽子。
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3.The pin caps on the door were all different sizes.
门上的别针大小都不一样。