a study of two groups who seemed to instantiate productive aspects of this.
针对似乎能举例说明这东西有效性的两个组的研究。
: instantiated, instantiating, instantiates 
词: instantiationa study of two groups who seemed to instantiate productive aspects of this.
针对似乎能举例说明这东西有效性的两个组的研究。
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