If the calcium channels are reduced, the heartbeat becomes irregular leading to a fall in blood pressure, fainting, and potentially, if untreated, death.是什么意思_If the calcium channels are reduced, the heartbeat becomes irregular leading to a fall in blood pressure, fainting, and potentially, if untreated, death.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句