The authors say future studies are needed to determine how different study materials and memory tasks impact the effect of errors on memory in aging.

作者认为未来的研究应该着眼于确定不同的学习材料和记忆任务是怎样调节错误对老年人记忆的影响。

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But, Peters and Schmidt say, Gobekli Tepe's builders were on the verge of a major change in how they lived, thanks to an environment that held the raw materials for farming.

但是，皮特斯和斯密特说，因为大自然为务农和农业提供了原材料，歌贝克力山丘遗址的建造者正面临着生活方式的巨变。

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Insiders say Apple's recent licensing deal with Liquidmetal Technologies is a play to gain the device maker access to the materials manufacturing technology on the planet.

业内人士透露，苹果最近购得了态金属技术的独家使用权，获得了拥有世界上最先进材料制造技术的设备。

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Officials say he bought materials to build explosive devices and traveled to New York City on September tenth as part of planning for an attack.

VOA: special.2009.10.17

Finally, let me say while this summit is focused on securing nuclear materials, this is part of a larger effort - the comprehensive agenda that I outlined in Prague last year to pursue the peace and security of a world without nuclear weapons.

WHITEHOUSE: Nuclear Security Summit: Presidential Press Conference

Still in a cast because of a broken ankle she suffered a week after Obama nominated her, Sotomayor has undergone test questioning and also spent time on her own reviewing cases and other materials, sources close to her say.

CNN: Sotomayor's confirmation hearing starts Monday

The report then goes on to say that most communities would be apprehensive to have radioactive materials at their doorstep.

FORBES: Nuclear Energy Radiating on Capitol Hill