天真 (tiān zhēn): ไร้เดียงสา

Children naively believe that Santa Claus really exists.

She naively thought that as long as she worked hard, she would definitely succeed.

His question was very naive, but full of curiosity.

Don't be so naive; reality is much more complicated than you think.

Her innocent smile made everyone feel warm.

Although he is already thirty years old, sometimes he is still very naive.