at (((米))the) table
食卓について，食事中に
at 10-minute intervals＝at intervals of 10 minutes
１０分ごとに
at 11 a.m.
午前１１時に
at 5 p.m. precisely
午後５時きっかりに
at 7 o'clock
７時に．
at 8 o'clock on a cold morning
ある寒い朝の８時に．
at 9 o'clock in the evening
午後９時に．
at a (single) bound
一跳びで
at a (single) glance
一目見て
at a 10 percent discount
１割引で
