A headache is important because it can be the first warning of a serious condition that could probably be controlled if discovered early.

头痛得重视，因为它可能是一种严重疾病的第一个预兆，如果及早发现的话，这种严重疾病可能会得到控制。

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The sudden flow of cold blood can create shock, a serious condition.

冰冷血液的突然流动会导致非常严重的震动。

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It's a serious condition that causes chest pain, breathing problems, and coughing, and it's also one of the main causes of heart disease.

这是个很严重的状态，会导致胸痛、呼吸困难和咳嗽，这也是造成心脏病的主要原因之一。

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However,fifteen percent of patients develop a more serious condition.

VOA: special.2009.05.26

A physician in Morocco familiar with the situation describes the captain's condition as "not serious."

VOA: standard.2009.12.07

His study shows that a diet high in white rice is associated with an increased risk of Type 2 diabetes, a serious health condition in which the body is unable to properly use sugar in the bloodstream.

VOA: standard.2010.06.25

It is a serious condition that may significantly impair relationships, work and social functioning.

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Two people in the town of Kopeysk were in a serious condition, it added.

BBC: Meteorites injure hundreds in central Russia

She has an 11-week-old baby son and remains in a serious condition on Tuesday evening.

BBC: Chip shop showed 'poor hygiene'