For instance, the airplanes and helicopters can not lose the helping role of the aerosphere.

如，飞机、直升机不能失去大气层的辅助住作用。

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The father smiled and said, "The role of the string was not stopping the kite from flying higher, but helping it stay in the sky, because the kite itself can't fly up."

父亲笑着说：“线的作用不是阻止风筝飞得更高，而是帮助它留在天空中，因为风筝本身不能飞起来。”

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Her role in helping to solve the mystery of DNA is unquestioned, and her place in science history is secure.

在帮助揭示DNA的秘密中，她的作用不成问题，而且她在科学史上的地位也是牢固的。

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And it tells about the role Chinese workers played in helping to build America into an industrial power.

VOA: special.2010.03.03

The Environmental Film Festival in Washington plays an important role in helping increase understanding about a subject that is important for people all over the world.

VOA: special.2009.03.25

It says unprecedented and globally coordinated fiscal and monetary stimulus is playing a major role in helping to restore private demand and lending.

VOA: standard.2010.06.27

So many of those who have rebooted have moved into a helping role, especially coaching.

FORBES: Reinvention: The American Way

Ms Cunningham said there was still work to be done in helping Scots understand the role they may have to play in helping meet the targets.

BBC: Ministerial statement: Climate change targets

While Beckham has brought plenty of glitz to England's bid, Dein could yet to play a key role in helping to deliver vital Fifa executive committee votes, despite not having an official role at present.

BBC: 2018 World Cup bidders present cases in Cape Town