剑桥词典physical exercise that increases the rate at which your heart works 可提高心跳頻率的運動；有氧運動 My workout usually includes 15 to 20 minutes of cardio. 我的健身運動通常包括15-20分鍾的有氧運動。 cardio exercises /training /workouts 有氧練習／訓練／運動 返回 cardio