It's a mystery是什么意思?

It's a mystery是什么意思? It's a Mystery 歌词 It is still a mystery for Yesterday is a history.Tomorrow is a mystery.Today is a gift.That's why we call it present! Yesterday Is History,tomorrow Is A Mystery And Today Is A Gift:that's Why We Call It . Yesterday is history; tomorrow is mystery;today is a gift.That's why it'scalled the present中文翻译 What I love so much about life is that it's a mystery and who knows what lies Everything is still a mystery,isn't it no more mystery是什么意思 misty mystery是什么意思 omantic mystery是什么意思 murder mystery是什么意思 the mystery machine是什么意思 it‘s a secret是什么意思 It's a pleasure是什么意思? it's a goal 是什么意思 功夫熊猫中名句的中文意思Yesterday was history,tommorrow is a mystery,today is a gift,that is why it's called the present Yesterday is history.Tomorrow is mystery.Today is a gift.That's why it is called present*!这句话的最最最早来源是什么?全文是什么?