建构主义已经根植与哲学、教育学和社会建构主义。
Constructivism has roots in philosophy, education and social constructivism.
更为重要的是，开拓精神已经深深地根植于美国人的自我概念中。
More important, the pioneer spirit is deeply embedded in the American's concept of himself.
更为重要的是，开拓精神已经深深地根植于美国人的自我概念中。
More important, the pioneer spirit is deeply embedded in the American's concept of himself.
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