第二次发作很严重，他的气道肿胀，无法呼吸，血压突然下降，心脏停了一会儿。
The second attack was so serious that his airway swelled, preventing him from breathing, his blood pressure dropped suddenly, and his heart stopped for a moment.
艾迪生病的突然发作是非常危险的，它可以导致迅速死亡。
The sudden onset of the disease is known as an Addisonian crisis, which may be rapidly fatal.
了解你的血压：高血压通常没有症状，但可导致突然的中风或心脏病发作。
Know your blood pressure: High blood pressure usually has no symptoms, but can cause a sudden stroke or heart attack.
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