求翻译：To understand further the motivation for behaviour, Abraham Maslow, a humanist psychologist, devised the ‘hierarchy of needs’. This provides a framework for the needs of life and predicts that there is an order in which needs have to be satisfied to enable individuals to achieve self- actualization. Self-actualization is an innate human motivation that each of us has to reach our full potential by using and developing our talents and abilities. As shown in Figure **, the lower levels of Maslow’s scale identify the requirements related to physical safety, such as food and shelter and progresses through to love, self esteem to the pinnacle of self-actualization. The hierarchy forms part of a theory which proposes that lower-level needs must be met before higher-level needs can be fulfilled.是什么意思？

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