然而，尽管在地球上的时日尚短，人类却已给地球表面带来了巨大的变化——这些变化与人类占据地球的短暂时间相比，是远远不成比例的。

Despite their short time on Earth, however, people have brought about enormous changes to the surface of the planet - changes far out of proportion to the interval of time they have occupied it.

youdao

罐体的外表面带有花纹图案和沟槽。

The exterior surface of the tank is provided with riffled patterns and grooves.

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相反，涂油的天然木材为入口的建筑表面带来了光亮。

In contrast, the oiled natural-wood finnish brings light to the entrance facades.

youdao

These cells can now kill cells that have the correct signature, and the signature is MHC-1 with this foreign antigen associated with it.

而这些细胞现在可以杀伤带标记的细胞,这些标记就是MHC-1表面受体,和与其相联的异己抗原

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