The Purdue team plans to do this next, making sure to create a slippery surface that will stop the nanoparticles from sticking to living cells as they move through the channels.

珀杜研究小组计划下一步进行相关实施，但要保证创造一个光滑的表面，这样可以阻止纳米颗粒与活体细胞在移动过程中黏在一起。

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Anyone can see a clear-cut rain forest and know that something was lost, but on the surface, a living sea and a dead one look much the same.

所有人都能在看到热带雨林被砍伐的同时感到失去了什么，但一片生机勃勃的海域和一片死气沉沉的海域从表面看来没什么两样。

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They found common bacteria living on the surface of skin that can help wounds to heal by releasing a special molecule to stop outer-skin cells getting inflamed.

他们发现在皮肤表面生长的普通细菌可以通过释放一种特殊的分子阻止外层细胞发炎来帮助伤口复合。

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Some other tennis venues, such as those used for the Australian Open have sliding roofs - but that tournament is on hard courts, which react differently to a living surface like grass.

BBC: SPORT | Tennis | The Wimbledon roof debate

Both are trying to make a living on a planetary surface and both are trying to do this as efficiently as possible without wrecking their living conditions.

CNN: How the search for aliens can help sustain life on Earth

Some scientists still defend those results: the soil may have had microbes living on ice beneath the surface, they say.

NEWYORKER: The Martian Chroniclers