Parents should sit back and let children do what they want to do.
And then, if it's an important moment, scold them properly. That's the key to parenting!
ご質問ありがとうございます。
"Parents should sit back"＝「親は一歩下がって」
"and let children do what they want to do."＝「子供がやりたいことをさせるべきである。」
"And then, if it's an important moment,"＝「そして、大事な瞬間であれば」
"scold them properly."＝「きちんと叱る。」
"That's the key to parenting!"＝「それが子育てのコツ！」
ご参考に。
"Parents should watch their children without interfering too much. And scold them at the right moment."
- "Parents should watch their children without interfering too much. And scold them at the right moment."
"parents" 「両親」
"should ~" 「〜するべき」
"watch their children" 「子供を見守って」"watch over their children" や "supervise their children" も言えます。
"without interfering" 「口出しせず」
"scold them" 「叱る」
"at the right moment" 「ここぞという時」
アメリカ合衆国 
オーストラリア 
