Use role names only when they help to clarify the context.

只有当参与者名字有助于澄清语境的时候，才使用它们。

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On farms and in factories, they help to do difficult work.

在农场、工厂里它们帮助完成困难的工作。

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In all these ways, they help to keep us young.

经由这些方式，儿童使我们得以保持年轻。

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Makers of the devices say they kill bacteria and viruses because they help to remove the wetness that germs need to survive.

VOA: special.2009.07.14

So we make a big minor map which they help to paint.

因此我们在孩子们的帮助下,绘制了一幅小型地图。

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And it's used to help somebody else realize the alternative views that perhaps they've not yet considered.

它能够用来帮助人们意识到那些他们可能从没考虑到的其他情况。

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But at the least, they help to paint a picture of how he lived.

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And, for investors in the enterprises they help to run, they bring more specific risks.

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At low altitudes they help to cool the Earth by reflecting sunlight away from it.

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