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。
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。
That finding suggests that social phobia is a serious condition beyond regular shyness, the researchers report Monday (Oct. 17) in the journal Pediatrics.
这个发现介绍说，社交恐惧是在正常害羞之上的的更严重的状况，研究者在周一（10月17号）的Pediatrics杂志发表了这一研究成果。
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
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