其中一些征兆和症状易于辨认，与病情相符，形成通常所称的综合征，说明存在一种或多种病原体。

Some of these signs and symptoms are easily recognizable and consistent, giving what is known as a syndrome that signals the presence of one or a number of pathogens.

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偶然，有些先兆子痫重度高血压的孕妇比较稳定且没有分娩，这些病人就有口服抗高血压药物治疗的指征。

Occasionally, preeclamptic women with severe hypertension are stabilized and not delivered. In these patients, oral antihypertensive therapy is often indicated.

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古人对黄河清有“祥瑞之兆”和“不祥之征”两种观点。

Ancient people had two opposite views on the clarity of the Yellow River: symbolism of auspice or malignancy.

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