お先にどうぞ

After you.

他人に自分より先に行くことを勧める礼儀正しい言い方。最初に行ってもよい、行くべきと示すための丁寧な言い方。

Bob stepped back anad made a motion with his hand indicating that Mary should go first. "After you," smiled Bod.

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「Common American Phrases in Everyday Contexts～A detailed guide to real-life conversation and small talk～」RRichard A. Spears, Ph.D. / The McGraw-Hill Companies