noun 下载 🔗分享 伸肌 A muscle whose contraction extends or straightens a limb or body part. Examples : "The doctor checked the extensor muscle in my arm by asking me to straighten my elbow against his resistance. " 医生让我顶着他的阻力伸直胳膊肘,以此来检查我手臂上的伸肌。 anatomy medicine physiology body organ 与AI对话词汇游戏阅读练习