It's better to ask and suffer temporary embarrassment than to remain ignorant and be ashamed forever.
新しい作業でわからないところがあったら、遠慮せずに聞いてください。問うは一旦の恥、問わぬは末代の恥です。
If you don't understand something about the new task, please ask without hesitation. Better a momentary embarrassment than lifelong shame.
試験勉強で疑問があれば先生に聞くべきだ。問うは一旦の恥、問わぬは末代の恥だよ。
If you have questions while studying for exams, you should ask the teacher. It's better to be embarrassed briefly than remain ignorant.
旅行先で道に迷ったら、恥ずかしがらずに尋ねよう。問うは一旦の恥、問わぬは末代の恥だからね。
If you get lost while traveling, don't be shy to ask for directions. It's better to ask and feel embarrassed than never know.