bloodlettings in history
历史上发生的战争或屠杀
avoid unnecessary bloodlettings
避免不必要的流血事件
the historical practice of bloodlettings was believed to cure various ailments.
历史上，放血术被认为可以治疗各种疾病。
bloodlettings were common in medieval medicine.
在中世纪医学中，放血术是很常见的。
some doctors still debate the effectiveness of bloodlettings.
一些医生仍然在争论放血术的有效性。
bloodlettings were often performed with leeches in ancient times.
在古代，放血术通常是用水蛭进行的。
many historical texts describe the use of bloodlettings for healing.
许多历史文献描述了放血术在治疗中的应用。
bloodlettings were thought to balance the body's humors.
放血术被认为可以平衡身体的体液。
modern medicine has largely abandoned the practice of bloodlettings.
现代医学在很大程度上放弃了放血术。
during bloodlettings, patients often felt faint and weak.
在放血过程中，病人常常感到晕眩和虚弱。
there were many misconceptions about the benefits of bloodlettings.
关于放血术的好处存在许多误解。
bloodlettings are now viewed as an outdated medical practice.
放血术现在被视为过时的医学实践。
bloodlettings in history
历史上发生的战争或屠杀
avoid unnecessary bloodlettings
避免不必要的流血事件
the historical practice of bloodlettings was believed to cure various ailments.
历史上，放血术被认为可以治疗各种疾病。
bloodlettings were common in medieval medicine.
在中世纪医学中，放血术是很常见的。
some doctors still debate the effectiveness of bloodlettings.
一些医生仍然在争论放血术的有效性。
bloodlettings were often performed with leeches in ancient times.
在古代，放血术通常是用水蛭进行的。
many historical texts describe the use of bloodlettings for healing.
许多历史文献描述了放血术在治疗中的应用。
bloodlettings were thought to balance the body's humors.
放血术被认为可以平衡身体的体液。
modern medicine has largely abandoned the practice of bloodlettings.
现代医学在很大程度上放弃了放血术。
during bloodlettings, patients often felt faint and weak.
在放血过程中，病人常常感到晕眩和虚弱。
there were many misconceptions about the benefits of bloodlettings.
关于放血术的好处存在许多误解。
bloodlettings are now viewed as an outdated medical practice.
放血术现在被视为过时的医学实践。
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