na dúvida

比較不可

安全のために / 念のために / 万一に備えて

英語の意味

Used other than figuratively or idiomatically: see na, dúvida. / just to be safe (it should be done even though it may not be necessary)

Sempre peço ajuda aos amigos na dúvida, quando não sei qual decisão tomar.

どの決断を下すべきか分からないとき、いつも友人に助けを求めます。

I always ask my friends for help when in doubt, when I don't know which decision to make.