Why? This is a real mystery.

为什么？这的确不可思议。

The real mystery about lupus is what precedes such events.

狼疮真正神秘之处,隐藏在病发之前.

The real mystery of Easter Island is not how its strange statues got there.

复活节岛的真正迷团不是岛上奇异的雕像。

Reason Ceratosaurus vanished in North America, Allosaurus vanished, is a real mystery.

在北美洲角鼻龙的消失异特龙的消失的理由，是个真正的谜团。

Now that is a real mystery. To understand what might be happening, we must go back to the Big Bang.

这真是一个谜。为了明白可能发生了什么，我们必须回头看看大爆炸。

The professor said: "It is a real mystery how these creatures are able to live without oxygen because until now we thought only bacteria could do this."

这真是难以理解的事情。 因为此前我们知道仅有细菌可以在无氧状态下存活。