U. s. scientists have made advances in the last few years on several major fronts.

过去几年里，美国科学家在几个重要的领域里都有很大的进步。

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Furthermore, the introduction of hybrid cars has made advances in the reduction of motorvehicle noise.

此外，混合动力汽车的应用也可以减少汽车带来的噪音。

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Significant advances have been made in the understanding of the biological and chemical nature of olfaction, but many fundamental questions have yet to be answered.

在理解嗅觉的生物学和化学性质方面已经有了重大进展，但许多基本问题仍有待回答。

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He denied the regime had made advances in the town and said that the municipality building was destroyed in fighting months ago.

BBC: Syrian army storms rebel town of Qusair

"The United States has missile-defense systems in place to protect us from limited ICBM attacks, but North Korea in particular has recently made advances in its capabilities and is engaged in a series of irresponsible and reckless provocations, " Mr. Hagel said.

WSJ: U.S. to Boost Missile Defenses in Response to North Korea

"The United States has missile defense systems in place to protect us from limited ICBM attacks, but North Korea in particular has recently made advances in its capabilities and is engaged in a series of irresponsible and reckless provocations, " Mr. Hagel said.

WSJ: U.S. to Boost Missile Defenses in Response to North Korea