按照你的句子的原文翻译，就是：
Don't wait until you have already lost it, then realize that you should have treasured it.
或者也可以说 It will be too late to realize that you should have cherished it after it is gone forever. 在永远失去以后才意识到你应该珍惜，就太迟了。
追问是问题
不是翻译啦～
不过sorry是我没说清
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