for use at a later date
以供日后参考
she lodged this idea in the back of her mind for future reference.
她把这个想法记在心里供日后参考。
the scope and limitations of an activity or area of knowledge
委托范围；委托权限
the minister will present a plan outlining the inquiry's terms of reference.
大臣将提出一份概述调查委托范围的计划。
in relation to; as regards
关于，就…而论
war can only be explained with reference to complex social factors.
战争只能用复杂的社会因素来解释。