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| longstanding; of many years; perennial; veteran; multiyear; vivacious; decades-long (bookworm); years long (Амбарцумян); studies following people over many years (ivp); years-long (Google's years-long effort to defuse the FTC's antitrust accusations Telecaster); many years of (Alexander Demidov); lasting or living many years; of many years' standing; long-term; long-lived; yearslong (Alex_Odeychuk) | |||
| lasting many years; living many years | |||
| age-old; long-lasting | |||
| perennial (о растении) | |||
| longitudinal (о медицинском контроле над группой людей) | |||
| plurannual | |||
| perennial (лат. perennis) | |||
| everlasting | |||
| multiannual | |||
| perennating | |||
| ... dating back years (BBC News Alex_Odeychuk) | |||
| lasting; paleocrystic | |||
| persistent; long-standing | |||
| multi-year (MichaelBurov) | |||
| многолетний: 412 phrases in 67 subjects |