aileron/ˈeɪlərɔn; `eləˌrɑn/ nhinged part of the wing of an aircraft, used to control its balance while it is flying 副翼（飞机的机翼上控制飞行平衡的活动辅助翼）. =>illus at aircraft 见aircraft之插图.
牛津英汉双解词典