名词
中文翻译：弹簧针
同义词：
['pin', 'needle例句：1. The spring pin is used to hold the book open.（弹簧针用来夹住书。）']
例句：
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1. The spring pin is used to hold the book open.
弹簧针用来夹住书。
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2.He carefully inserted the spring pin into the lock.
他小心翼翼地将弹簧针插入锁中。
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3. The spring pin was responsible for the door's opening mechanism.
弹簧针负责门的开启机制。