at sunrise
日の出に
at ten minutes(') notice
１０分前の予告で
at ten o'clock prompt
１０時きっかりに
at ten past six
６時１０分（過ぎ）に
At ten the King granted him an audience [received him in audience].
国王は１０時に彼を引見した
at [in] that (very) instant
まさにその瞬間
at that time
その頃
at the age of 17
１７歳で
at the age of 23 ＝((米))at age 23
２３歳で
at the airport
空港で
