没有血压，没有脉搏，没有呼吸，没有血液流动。

No blood pressure, no pulse, no oxygen, no blood flow.

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例如，研究报告的作者指出，在大多数他们调查的国家里，很多病人服用药物降低血压，但并没有把血压控制在正常水平。

For example, the authors note that in most countries surveyed, many patients took medicine to lower blood pressure, but not enough to really bring blood pressure under control.

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通常来说，高血压并没有明显的征兆或症状。

High blood pressure often has no signs or symptoms.

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