自我在精神分析学中指有意识的最直接地控制思想和行为,与外部世界联系也最多的那部分自我 In psychoanalysis, the division of the psyche that is conscious, most immediately controls thought and behavior, and is most in touch with external reality.
车身机动车的金属和塑料的外部结构 The metal or plastic external structure of a motor vehicle.
房子的外部需要粉刷。 The outside of the house needs painting.