相传月老有一件宝物同心锁，相爱的男女只要被同心锁锁住就会永不分离！如果恋人的爱情能够感动月老，他就会赐给恋人同心锁，让恋人从此生生世世永结同心。
本发明涉及一种挂环同心锁，属于同心锁具结构技术领域。
The invention relates to a hanging ring concentric lock, belonging to the field of concentric lock structure technique.
有趣的是，许多同心锁原本没有钥匙眼儿，这表示一旦定情，便无退路。
Interesting BE, many united at heart lock set source versions doesn't have flat key eye son, this show is once pledging love, then having no way out.
几百万把刻着恋人首字母的同心锁去年因安全原因被从巴黎的艺术桥桥头拆下。
Millions of the padlocks that couples emblazon with their initials and attach to the Pont des Arts were removed last year for safety reasons.
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