Japanese phrase
___に立ち会ってもいいですか？ ___ ni ta chi a tte mo i i de su ka
Meaning
May I be present for ___?
When to use it
Asks permission to stay and watch an event or process. It is polite and somewhat formal, so it suits official settings or situations requiring clear consent.
Example dialogue
荷物検査に立ち会ってもいいですか？ ni motsu ken sa ni ta chi a tte mo i i de su ka
May I be present for the baggage inspection?
はい、こちらでお待ちください。 ha i ko chi ra de o ma chi ku da sa i
Yes, please wait here.