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It's hailed as the magic number to reach every day if you want to stay fit and healthy. 它被誉为要想保持健康每天必须要达到的神奇数字。 But health officials say we don't have to notch up 10,000 steps... a brisk ten-minute walk could be just as good. 但是卫生官员们却说，我们没必要走完一万步……10分钟的快步走同样很好。 They want people to increase the intensity of their walking, rather than just focus on the distance. 他们希望人们提高步行的强度，而不只是注意距离。 | 
