1. The practice of bloodletting was once believed to cure many illnesses.
血液放血的做法曾被认为可以治愈许多疾病。

2. The doctor recommended bloodletting as a treatment for the patient's high blood pressure.
医生建议对患者进行放血治疗高血压。

3. Bloodlettings were common in medieval times as a way to balance the body's humors.
在中世纪，放血是一种常见的方式，用来平衡身体的体液。

4. The ancient Egyptians practiced bloodletting as a form of medical treatment.
古埃及人把放血作为一种医疗手段。

5. Many people died from infections caused by unsanitary bloodlettings in the past.
许多人曾死于过去因不洁放血引起的感染。

6. Bloodlettings are no longer a common medical practice due to advancements in modern medicine.
由于现代医学的进步，放血不再是一种常见的医疗方式。