Prevention: Remember to stretch and strengthen your upper back to compensate for all that hunching you do at the office.

预防：记得伸展和加强你的上背以缓解上背的紧张状态，因为你在办公室里总是让你的上背拱起。

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A quick stretch says Steve Hunter, of Sport and Exercise Science at London Southbank University. 'If we sit still at a desk all day, our bodies start to slow down.

快速的拉伸能让你振奋起来，伦敦和运动科学系的史蒂夫·亨特说：“如果我们每天都坐在桌子前，那我们的身体就会开始变慢。”

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A quick stretch can perk you up, says Steve Hunter, of Sport and Exercise Science at London Southbank University. 'If we sit still at a desk all day, our bodies start to slow down.

快速的拉伸能让你振奋起来，伦敦南岸大学的体育和运动科学系的史蒂夫·亨特说：“如果我们每天都坐在桌子前，那我们的身体就会开始变慢。”

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At that time the United States did not stretch all the way across the continent.

VOA: special.2010.01.11

Every cell in your body has exactly the same DNA; that is if I could stretch out all the DNA and look at the base pair sequence, the sequences of bases along all the DNA in your chromosomes, they'd be identical in all the cells.

身体内每一个细胞都有完全相同的DNA,如果我把整条DNA展开,然后检查其碱基对的顺序,你体内每个细胞中染色体上,DNA的碱基对顺序,都是完全相同的

耶鲁公开课 - 生物医学工程探索课程节选

And it is no stretch at all to believe that they will benefit from it as greatly as the Italian railroad passengers in Bologna did on August 2, 1980.

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In Central America, six countries all squabble over at least some stretch of their land or sea borders.

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"When you raise money in pieces rather than all at once, you have to stretch the money as far as possible, " John says.

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