名词中文翻译
中文翻译：关节扣
同义词：
['knuckle', 'joint pin']
例句：
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1.He put the knuckle pin in his pocket to keep it safe.
他把关节针放进口袋里以防丢失。
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2.The doctor used a knuckle pin to remove the splint from her broken arm.
医生用关节针把夹板从她断了的手臂上取了下来。
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3.She wore a knuckle pin as a symbol of her courage and determination.
她佩戴着一个关节针作为勇气和决心的象征。