Take One Step

只想记录一下练习英语的过程.
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    At a shopping mall in Coventry, England, researchers posted colorful signs along the step of a staircase that said:"Taking the stairs protects your heart." Over a 6 weeks period, the number of people who chose to walk up the stairs instead of riding the adjacent escalator more than doubled. The researchers say that every step counts, and that long-term behavior will change only if the signs are seen regularly.
  

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