Walking or running up the stairs will get your heart rate up.
散散步，爬爬楼梯会让你的心脏加快跳动。
Walk at a moderate pace, enough to get your heart rate up slightly.
按适度的步伐行走。速度不用太快，只要使得心率稍微快于平时就可以。
It has high reliability, small water resistance and high ball collecting rate up to 95%.
该系统运行可靠，水阻小，收球率达95%以上。
It has high reliability, small water resistance and high ball collecting rate up to 95%.
该系统运行可靠，水阻小，收球率达95%以上。
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