COPD is a serious lung disease that makes breathing difficult. Symptoms can include breathlessness, chronic cough and excessive phlegm.
COPD是一种严重的肺病可造成呼吸困难，症状包括呼吸困难、久咳和痰多。
Occasionally bad breath is a sign of a more serious problem, such as an infection, chronic bronchitis, diabetes, or kidney or liver disease.
口臭有时是更严重疾病的标志，比如感染、慢性支气管炎、肾脏或肝脏疾病。
They are unhappy and unable to socialize and there is a connection between chronic loneliness and serious illnesses such as heart disease.
他们不开心，失去了社交能力，而且长期的孤独和诸如心脏病这样的严重疾病是息息相关的。
Chronic congestive heart failure (CHF) is a kind of syndrome caused by various of heart diseases, which is a common and serious disease.
慢性充血性心力衰竭(CHF)为多种病因导致心肌舒缩功能受损最终失代偿而出现的临床综合征，为内科常见危重病症。
Chronic congestive heart failure (CHF) is a kind of syndrome caused by various of heart diseases, which is a common and serious disease.
慢性充血性心力衰竭(CHF)为多种病因导致心肌舒缩功能受损最终失代偿而出现的临床综合征，为内科常见危重病症。
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