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来源:雅诚德英语网
Determining the functions of play is difficult because the functions may be long-term, with beneficial effects not showing up until the animal's adulthood.
定义玩耍的功能是困难的,因为这些功能可能是长期性的,其积极影响要到动物成年后才会显现。
Determining the functions of play is difficult because the functions may be long-term, with beneficial effects not showing up until the animal's adulthood.
定义玩耍的功能是困难的,因为这些功能可能是长期性的,其积极影响要到动物成年后才会显现。