There was a time when social pressures were killing off the Welsh language, but after years of efforts, it is now an active part of Welsh life again.

曾经有一段时间，社会压力使威尔士语逐渐消亡，但经过多年的努力，威尔士语现在再次成为威尔士人生活中活跃的一部分。

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Finally, they succeeded in growing super hybrid rice after years of efforts.

经过多年的努力，他们终于成功培育出了超级杂交水稻。

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After years of efforts has developed a range of sand blasting equipment.

经过多年的努力已开发出一系列完善的喷砂设备。

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Congress enacted CAFA in 2005 after years of legislative efforts, marking it as one of the most consequential business-related pieces of legislation of the past decade.

FORBES: Supreme Court Closes Class Action Loophole

After years of failed efforts with regulation-centered energy policy, many more groups are shifting their intellectual capital toward the difficult work of structuring energy innovation policies to catalyze a clean energy revolution.

FORBES: The Carbon Tax, Then and Now

Now, after years of fruitless efforts to deal with taxanes' shortcomings, Bristol-Myers (nyse: BMY - news - people ) and rival Aventis (nyse: AVE - news - people ) (which produces another taxane called docetaxal, under the name Taxotere) each have promising new variations.

FORBES: Taxol's Next Stand