As a domestic helper, I should learn some early symptoms about the common diseases, such as cold, flu, enteritis, gastritis, pneumonia, cerebral hemorrhage, hypertension, heart trouble and so on.
2
通常是冠状动脉性心脏病的症状，是最常见的一种心脏病。
It often occurs as a symptom of coronary artery disease, the most common type of heart disease.
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