This discovery was perceived as a major breakthrough.

这一发现被视为一项重大突破。

《牛津词典》

A young scientist named Raymond Kurzweil has now designed a computer which is a major breakthrough in providing aid to the sightless.

一位名叫雷蒙德·库兹韦尔的年轻科学家设计出了一台电脑，这是为盲人提供帮助的一个重大突破。

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Scientists are claiming a major breakthrough in the fight against cancer.

科学家们宣称攻克癌症已有重大的突破。

《牛津词典》

The government scored a major breakthrough with the November 2011 killing of FARC leader Alfonso Cano.

FORBES: Colombians Doubt a Law Can Get Them Home Again

Western diplomats have lowered expectations of a major breakthrough in Almaty, with Iranian presidential elections looming.

WSJ: Iran Pushes Back as West Awaits Nuclear Offer Response

No single drug developed in the past decade for advanced colorectal cancer represented a major breakthrough.

FORBES: Pfizer Fights Back Against