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nth year in the Taishō era (1912.7.30-1926.12.25)
「大」 has other readings with different meanings.
大好きな映画を見つけたんだよ。
I found a movie I really like.
大急ぎで駅に向かったんだけど。
I hurried to the station.
大勢の人が集まっていたよね。
A lot of people had gathered.