there are never enough i love you’s 请问you后的's是什么?是什么规则

问题补充：
能详细说明一下为什么是's吗?是什么规则
's 就是加复数的意思.
因为 i love you 是一句话,直接加S 就成了:i love yous 这就不成话了.
于是加个' 区分一下.
这是很常见的:
There will always be another day to say our "I love you's""
有另一天可以让我们说许多遍的“我爱你”
' There would have been more 'I love you's' More 'I'm sorry's.
而会更经常说“我爱你”而不是“对不起”.
In my youth,Mom always showered me with "I love you's" every day.So I really never thought about not hearing it from my dad.
在我小的时候,妈妈每天都对我说数次“我爱你”,所以我从来也没觉得没从爸爸那里听到这句话有什么缺失.
There will always be another day to say our"I love you's",and certainly there's another chance to say our"Anything I can do's?
因为我们总可以等到明天才说“我爱你”,因为总可以等到明天再说“我能为你做些什么吗?”
There will always be another day to say our "I love you's",And certainly there's another chance to say our "Anything I can do's?
总是有那么一天说“我爱你”,当然就永远有机会说“我还可以做什么?”.
When my kids kissed me impetuously,I would never have said,"Later.Now go get washed up for dinner." There would have been more "I love you's" More "I'm sorry's."
当我的孩子莫名地亲我时,我永远不会再说,“等一会儿.现在你要洗手吃饭.”我会更多地说“我爱你”,“对不起.”
There would have been more "I love you's"…More "I'm sorry's" …But mostly,given another shot at life,I would seize every minute… look at it really see it … live it …never give it back.
我要更多地说“我爱你”……“对不起”……但总的,再让我活一回,我要把握好分分秒秒,留心生活,真正关注生活,品味生活,决不使岁月蹉跎.
there are never enough " i love you’s "
这是比较特殊的句法.
'我爱你',永远说不够.
是'我爱你'这句话的复数.