短语词组短語pectoral fin [魚]胸鰭pectoral retractor 胸部牽開器;胸部拉鉤Pectoral Fly 蝴蝶式擴胸pectoral veins [解剖]胸肌靜脈;胸肌靜脈mako pectoral 條紋狀胸鰭pectoral muscles 胸肌;胸大肌Pectoral major 胸大肌endothoracic pectoral 胸肌膜Pectoral flower 胸花pectoral muscle 胸肌 返回 pectoral