cardiac activity的用法和樣例：
例句
- Cardiac arrest kills more than three hundred thousand people in the United States every year.
在美國，每一年有超過(guò)三十萬(wàn)人由于心搏停止而喪失性命。 - Sustained chronic tachyarrhythmias often lead to cardiac dysfunction known as tachycardia-induced cardiomyopathy or tachycardiomyopathy.
摘要持續性的心搏過(guò)速會(huì )造成心臟功能變差，稱(chēng)之為心搏過(guò)速引發(fā)之心肌癥。
