sustainableKK [səˋstenəbəl] /səˈsteɪnəbəl/发音形容词1永续的、环保的The city is investing in sustainable energy and public transport.该市正投资于永续能源与公共运输。2可长期维持的、可持续的Such rapid growth is simply not sustainable in the long run.这种快速成长长期来看根本无法持续。3站得住脚的、可支撑的正式His argument is not sustainable without much stronger evidence.他的论点若没有更有力的证据就站不住脚。用这个字练口说→