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Sirs; Mesdames
around (the time that, etc.); about
「方」 has other readings with different meanings.
先生方にお礼を申し上げます。
I would like to thank the teachers.
お客様方のご来場をお待ちしております。
We look forward to the arrival of our guests.
皆様方のご協力のおかげで無事に終わりました。
Thanks to everyone's cooperation, it ended successfully.