子供心: childlike mind, judgment as a child

child's naive mind, child's juvenile mind

the usual, ordinary

always, invariably, all the time / usually / (with a negative verb) never

子供: child

challenge (against authority or a higher-ranked person) / (figuratively) try at something

to challenge / (figuratively) to take on the challenge of doing something (especially something one has not done before); to try; to try one's hand at

new, novel / latest, recent / modern / fresh

to forget / (auxiliary verb, after the continuative form of a verb) to forget to …

(archaic) new, novel / (archaic) latest, recent / (archaic) modern / (archaic) fresh