名词
中文翻译：失血
同义词：
['blood loss', 'hemorrhage']
例句：
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1.The patient's heart rate is very low, which may be due to lost circulation in his chest.
病人的心率非常低，这可能是因为胸部血流不畅。
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2.During surgery, it's important to monitor for signs of lost circulation.
在手术期间，监测有无失血迹象非常重要。
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3.Doctors often use a tourniquet to prevent blood loss during operations.
医生经常使用止血带来防止手术中的出血。