The child has no understanding in any real way of the external world.
儿童对于外部世界并没有什么真正的认识
耶鲁公开课 - 心理学导论课程节选
It's the pressure the external world is applying on this poor system here.
V是气体初态和,末态的体积之差。
麻省理工公开课 - 热力学与动力学课程节选
应用推荐
模块上移
模块下移
不移动