Many of these were underutilized or misused during its two decades as the world’s lone superpower.

作为世界上孤独的世界大国，二十多年来这些牌都没有充分利用或者被误用了。

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During these last decades, the changes in have been China are incredible and spectacular.

过去几十年中，中国发生了惊人的变化。

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Hewlett-Packard's retirement of its MPE and OpenVMS lines, for example, presents a serious challenge to customers who have depended on these minicomputer brands during the last decades.

例如，Hewlett - Packard的mpe和openvms产品线的退休向客户发出了一个严峻的挑战，因为在过去的几十年中，他们一直依赖这些小型计算机品牌。

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During these two decades, Mr. Walsh regained control of his life.

WSJ: Joe Walsh | Analog Man | An Eagle Flies Solo Once Again | By Jim Fusilli

While some studies have reported increases in European and North American storminess over the last two decades, these conditions during the twentieth century have been found not to be uncommon, even mild, compared with earlier times when temperatures and CO2 levels were lower.

FORBES: He's Baaack!: A Hot New Media Blast From Al Gore