The different noise conditions had quite different after-effects when the subjects were required to proofread written material under conditions of no noise.

当测试对象被要求在无噪声条件下对书面材料进行校对时，不同的噪声条件会产生不同的后效应。

youdao

During the whole of this session, their attention is passive; they listen to the music but make no attempt to learn the material.

在整个过程中，人们的注意力是被动的；他们聆听音乐，但不花任何努力在学习材料上。

youdao

We would be surprised if those young black holes no longer greedily devoured the material around them and merged with other black holes.

如果那些年轻的黑洞不再贪婪地吞吃它们周围的物质并与其它黑洞合并，我们会感到惊讶的。

youdao

But experts say no-one knows how large the world stockpile of nuclear material is because not every country reports what it's producing.

VOA: standard.2010.04.06

But a rumor of a bug in a device that Motorola knows isn't ready for consumers -- and has no material effect on any official launch date -- simply doesn't matter.

ENGADGET: Editorial: bugs on unreleased phones don't matter (update: Motorola says phones will 'ship as scheduled')

There didn't appear to be any hazardous-material crews, and no neighbors were evacuated.

NPR: Attorney: Miss. Man Denies Mailing Ricin To Obama

The "silent mutations" - changes in genetic material - are likely to have no obvious impact on older fathers' own children, but they may build up through subsequent generations, or interact with other genes and environmental factors, to increase the chance of their grandchildren developing the condition, the researchers say.

BBC: Grandparents 'may relay autism risk to grandchildren'