词汇	外部世界
释义	外部世界 external world；outer/outside world外部
随便看	learning obstacle learning obstacles learning obstruction learning of China learning of Confucian classics Learning of Confucius learning of constructivism learning of decision-making level learning of decision trees learning of English vocabulary learning of evaluation Learning of great classics-expositors learning of history Learning of Hsun-Tzu learning of human learning of knowledge ontology learning of learn learning of Marxism-Leninism learning of neuron learning of object model learning of object structure learning of physics learning of problem solving learning of righteousness and principle learning of second language