adductor
noun [ C ] medical specialized uk/əˈdʌk.tər/ us/əˈdʌk.tɚ/
内收肌，内转肌（使身体的某一部分向身体中部或身体另一部分移动的肌肉，通常指三种大腿肌）
a muscle that moves a part of the body towards the middle of the body or towards another body part, often used to refer to the three large thigh muscles
When you move your leg toward the midline of the body, you are using adductor muscles. 当你将腿向身体中部移动时，使用的便是内收肌。