Something that is notional exists only in theory or as a suggestion or idea, but not in reality.
双语例句
例： the notional value of state assets.
国有资产的名义价值。
例： He made around two hundred thousand pounds notional profit last year.
他去年赚了二十万英镑的理论利润。
例： a notional concept of what makes a good parents.
一种关于什么造就好父母的理论概念。