- ancient and modern times; all ages
古今の ancient and modern; of all ages
- 古今東西の民謡
- ballads of all ages and countries
- 古今を通じて
- in history/through all ages
- この作品は芸術的価値において古今未曽有である
- In its artistic value this work is unparalleled [unequaled] in history.
- これは古今未曽有の大発見である
- This is the greatest discovery 「on record [in history].