| 例句 |
life spansnounpl. of life span the period during which something exists, lasts, or is in progressI saw no need to pay more for a better-built computer that would just grow obsolete before the end of its life span continuances, dates, durations, lifetimes, lives, runs, standings, times spells, stretchesspans, tenures, termshitches, tours, turnshalf-lifes(or half-lives)ages, longevities |