individual variable

例句：

1. 1. The individualvariable is the one that varies from personto person.
   个体变量是因人而异的那个。
2. 2. Thestudy of individual variables is important for understandinghuman behavior.
   研究个体变量对于理解人类行为很重要。
3. 3. The researcher found that theindividual variable had a significant impact on theoutcome.
   研究人员发现，个体变量对结果有显著影响。