sustainableKK [səˋstenəbəl] /səˈsteɪnəbəl/形容詞1永續的、環保的The city is investing in sustainable energy and public transport.該市正投資於永續能源與公共運輸。2可長期維持的、可持續的Such rapid growth is simply not sustainable in the long run.這種快速成長長期來看根本無法持續。3站得住腳的、可支撐的正式His argument is not sustainable without much stronger evidence.他的論點若沒有更有力的證據就站不住腳。