Pacemakers can relieve some symptoms related to arrhythmias, such as fatigue (tiredness) and fainting.A pacemaker can help a person who has an abnormal heart rhythm resume a more active lifestyle.是什么意思_Pacemakers can relieve some symptoms related to arrhythmias, such as fatigue (tiredness) and fainting.A pacemaker can help a person who has an abnormal heart rhythm resume a more active lifestyle.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句