英语词汇“knee jerk”是什么意思，“knee jerk”的读音、用法及例句翻译-烛光网

词汇	knee jerk
释义	knee jerkn.（名词） A reflex contraction of the quadriceps muscle resulting in a sudden involuntary extension of the leg, produced by a sharp tap to the tendon below the patella; patellar reflex.膝反射：通过突然叩击膝盖下的腱产生的股四头肌的反射挛缩，造成小腿突然的无意识的伸展；膝反射
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