梧桐树能长多高？如果你砍断它，那必是个永远的谜。
How high does the sycamore grow? If you cut it down, the you 'll never know.
可能，这个一战贺卡为什么推迟了100年才邮寄成功的秘密永远是一个谜了。
The postcard's history for the last 94 years remains a total mystery.
但是，五千年前啤酒的滋味也许将永远是一个谜，尽管科学家们表示他们知道使用了那些原料，但是他们并不知道每种原料的具体用量。
The exact taste of the ancient brew will remain a mystery however, as while the scientists say they know what ingredients were used, they don't know the quantities.
上述因素均可能导致是次搁浅事件的原因，但幼鲸被冲上沙滩的真相可能永远成谜。
Either of these factors may have contributed to this individuals stranding, but we will probably never know exactly why the whale washed ashore here.
但是，五千年前啤酒的滋味也许将永远是一个谜，尽管科学家们表示他们知道使用了那些原料，但是他们并不知道每种原料的具体用量。 。
Thee exact taste of the ancient brew will remain a mystery however, as while the scientists say they know what ingredients were used, they don't know the quantities.
这之后确切地发生了什么没有人知道。这两名日本飞行员的结局或许永远都是一个谜。
Exactly what happened next is not known and the fate of the two Japanese pilots may forever remain a mystery.
除非有人发现像古埃及罗塞塔碑的双语石碑，协助学者破解这种书写体，否则这文字将永远是个谜。
We will never know for sure until someone discovers some form of bilingual tablet (an Indus Rosetta stone) that will help scholars break the code of the writing system.
我相信生命值得我们珍惜，就像一个永远都不能完全被解开的谜，像一种永远都不能被玷污的圣洁，像一张邀请我们经历现在但只能留作将来追忆的 请帖。
I believe in treasuring it as a mystery that will never be fully understood, as a sanctity that should never be destroyed, as an invitation to experience now what can only be remembered tomorrow.
我相信生命值得我们珍惜，就像一个永远都不能完全被解开的谜，像一种永远都不能被玷污的圣洁，像一张邀请我们经历现在但只能留作将来追忆的 请帖。
I believe in treasuring it as a mystery that will never be fully understood, as a sanctity that should never be destroyed, as an invitation to experience now what can only be remembered tomorrow.
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