Once you can successfully run for long stretches, don't feel as if you have to abandon the run/walk method.
当你可以成功地跑很长一段的时候，不要觉得可以你可以丢掉跑步/步行方法。
Onceyou can successfully run for long stretches, don't feel as if you haveto abandon the run/walk method.
当你可以成功地跑很长一段的时候，不要觉得可以你可以丢掉跑步/步行方法。
If you don't have a staircase, run in place or walk briskly around the house.
如果你不想做上下台阶，原地跑或者绕着房子走圈也行。
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