Just walk, at a reasonably vigorous clip (3 m. p. h. - 4 m. p. h.) for half an hour or so, maybe five or six times a week.

就以适度有力的步伐(每小时3 ~4英里)走上半个小时左右，每周五六次。

youdao

Just walk, at a reasonably vigorous clip (3 m. p. h. - 4 m. p. h.) for half an hour or so, maybe five or six times a week.

就以适度有力的步伐(每小时3 ~4英里)走上半个小时左右，每周五六次。

youdao