动词
中文翻译：松开
同义词：
['unpin', 'unfasten', 'untie例句：1. He quickly unpinned the hat from his head and put it on the table.（他迅速从头上摘下帽子，放在桌子上。）']
例句：
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1. He quickly unpinned the hat from his head and put it on the table.
他迅速从头上摘下帽子，放在桌子上。
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2.The maid unfastened the door to let in the fresh air.
女仆解开门上的锁，让新鲜空气进来。
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3. She untied her scarf and took a deep breath of the crisp autumn air.
她解开围巾，深深地吸了一口秋天的清新空气。