静脉切开术；放血
切开静脉以抽血或放血；静脉切开术。；放血术；[医] 静脉切开术；放血术
The surgical opening of a vein to draw blood or let blood; venesection.
切开静脉以抽血或放血；静脉切开术。
The opening of a vein, either to withdraw blood or for letting blood; venesection.
Phlebotomy is sometimes used to treat iron overload disorders.
静脉切开术有时用于治疗铁过载疾病。
用法提示：这里 phlebotomy 作为名词表示一种医疗操作，即静脉切开或放血术。
The doctor recommended a phlebotomy to reduce the patient's high iron levels.
医生建议进行静脉切开术以降低患者过高的铁水平。
用法提示：phlebotomy 作为名词，与不定冠词 a 连用，指一次具体的手术。
In medieval medicine, phlebotomy was a common treatment for various ailments.
在中世纪医学中，放血术是对各种疾病的常见疗法。
用法提示：phlebotomy 作为不可数名词，泛指放血疗法。
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