Many young patients, once relieved of their arthritic pain, may return to a physically active lifestyle after hip arthroplasty.

很多年轻病人，髋关节置换术后一旦关节疼痛减轻，就可能恢复积极运动的生活方式。

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Yet once those concerns are relieved, oil can fall quickly: Crude dropped 4.5% this week on speculation that the U.S. and other nations might release oil from their strategic reserves to combat high prices and that Saudi Arabia might increase production.

WSJ: Commodities Unbound!

In 1983, after being released from three terrifying weeks in the hands of kidnappers, he joked that he had never been so relieved to see so many policemen all at once.

ECONOMIST: Freddy Heineken

Once the worst had passed, she called her family in Adairsville and was relieved to hear they'd all made it to a cinderblock storm shelter under her grandparents' home.

WSJ: 2 dead after storms rake South, move to Northeast