剑桥词典physical exercise that increases the rate at which your heart works 可提高心跳频率的运动；有氧运动 My workout usually includes 15 to 20 minutes of cardio. 我的健身运动通常包括15-20分钟的有氧运动。 cardio exercises /training /workouts 有氧练习／训练／运动 返回 cardio