有两个主要原因使心跳保持高于最小值。
There are two primary reasons for keeping the heartbeat above the minimum.
Karp公布了两个公式用于计算跑步时的心跳频率。
Karp states that there are two formulas to figure your heart rate while running.
Karp公布了两个公式用于计算跑步时的心跳频率。
Karp states that there are two formulas to figure your heart rate while running.
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