The cause of dyspnea may be pulmonary disease, circulatory disease, or both.

呼吸困难的原因可能是肺部疾病，循环系统疾病或者两者并存。

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Such exercises may be a primary factor in the(32) ___0f heart and circulatory disease.

这样的运动可能是防止心脏和血液循环疾病的一个主要因素。

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Such exercise may be a primary factor in the prevention of heart and circulatory disease.

这种运动可能是一个主要因素在预防心脏和循环系统疾病。

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Three for schizophrenia, strokes and a circulatory illness known as peripheral arterial occlusive disease have been specifically identified.

ECONOMIST: Human genetics