求翻译：影响研究生体育行为的因素可以分为三类:研究生体育行为倾向因素、促成因素和强化因素。干预研究生体育行为必须从这三个因素综合进行，三者缺一不可。是什么意思？

Factors affecting the behavior of graduate sports into three categories: graduate sports behavioral tendencies factors, contributing factors and strengthen the factors. Graduate physical behavior intervention must be carried out from the three factors, three are indispensable.

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Affects the graduate student sports behavior the factor to be possible to divide into three kinds: Graduate student sports behavior tendency factor, contributory cause and strengthened factor.Intervenes the graduate student sports behavior to have to carry on from these three factor synthesis, three

Factors affecting the sports behavior of graduate students can be divided into three categories: postgraduate physical education behavior orientation factor, contributing factors and strengthen factors. Intervention postgraduate physical education act must be made from these three factors, three are

Factors affecting the behavior of graduate sports into three categories: graduate sports behavioral tendencies factors, contributing factors and strengthen the factors. Graduate physical behavior intervention must be carried out from the three factors, three are indispensable.