Others were preserved and buried with great care .

而另一些则是被小心翼翼的保存埋葬起来的。

The subsequent cold and dry have preserved them from decay .

接下来的寒冷和干燥保存了它们不会腐烂。

Official government communications are required to be preserved under federal law .

按照联邦法律，官方的通信记录必须被保存。

Using tweezers , they preserved each piece between sheets of glass .

他们用镊子把每一页放入玻璃片中保存。

Of course multiple versions of the physical world cannot be physically preserved .

当然，现实世界的每个版本不可能完整的保存。